The p-value for the right-tailed t-test with a test statistic of 0.73 and a sample size of 39 is approximately 0.2352 (rounded to 4 decimal places).
How to find the p- value to 4 decimal placesTo find the p-value for a right-tailed t-test, we need to use the t-distribution table or a calculator.
Given that the test statistic t = 0.73 and the sample size is 39, we can calculate the p-value using the t-distribution.
For a right-tailed t-test with a sample size of n = 39, the degrees of freedom are given by df = n - 1 = 39 - 1 = 38.
Since this is a right-tailed test, the p-value represents the probability of observing a t-value greater than or equal to the given test statistic.
Using a t-distribution table or a calculator, we find that the p-value for t = 0.73 with 39 degrees of freedom is approximately 0.2352.
Therefore, the p-value for the right-tailed t-test with a test statistic of 0.73 and a sample size of 39 is approximately 0.2352 (rounded to 4 decimal places).
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find the open intervals where the function is concave upward or concave downward. find any inflection points.
If f''(x) > 0, then f(x) is concave upward, If f''(x) < 0, then f(x) is concave downward, Inflection points occur where f''(x) = 0
How to determine the intervals where the function is concave?To determine the intervals where the function is concave upward or downward and any inflection points, we need to take the second derivative of the function.
If the second derivative is positive, then the function is concave upward. If the second derivative is negative, then the function is concave downward.
An inflection point occurs when the concavity of the function changes. This happens when the second derivative changes sign from positive to negative or from negative to positive.
Once we have the second derivative, we can set it equal to zero to find any points where the concavity changes.
So, let's say we have a function f(x), and we take the second derivative and get f''(x).
To find the intervals where f(x) is concave upward, we look for the intervals where f''(x) is positive. To find the intervals where f(x) is concave downward, we look for the intervals where f''(x) is negative.
To find any inflection points, we set f''(x) equal to zero and solve for x.
So, to summarize:
- If f''(x) > 0, then f(x) is concave upward on that interval.
- If f''(x) < 0, then f(x) is concave downward on that interval.
- Inflection points occur where f''(x) = 0 and the concavity changes.
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Only do question 5
50 points
Topic: Percentage
Answer:
.2%
.6%
40.25%
Step-by-step explanation:
There are 100 blocks in a grid so a complete grid is 100 %
a 2/10 out of 1 block is shaded
2/10 out of 100
.2 out of 100
out of 100 means percent
.2 %
b 3/5 out of 1 block is shaded
6/10 out of 100
.6 out of 100
out of 100 means percent
.6%
c 40 /100 + 1/4 out of 1 block
40% + .25 %
40.25%
Need help on this asap please
The cost per minute of the plan is given by the following option:
$0.30 per minute.
How to define a linear function?The slope-intercept representation of a linear function is given by the equation presented as follows:
y = mx + b
The coefficients of the function and their meaning are described as follows:
m is the slope of the function, representing the change in the output variable y when the input variable x is increased by one.b is the y-intercept of the function, which is the initial value of the function, i.e., the numeric value of the function when the input variable x assumes a value of 0. On a graph, it is the value of y when the graph of the function crosses the y-axis.The cost per minute of the plan is the slope of the function. From the table, we have that when the number of minutes increases by 5, the cost increases by $1.5, hence the cost per minute is given as follows:
1.5/5 = $0.30 per minute.
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Multiply. –4x(7 – 3x)
–28x – 3x^2
7 + 12x^2
–3x – 7x^2
–28x + 12x^2
Use a proof by cases to show that min(a,min(b, c)) = min(min(a,b), c) whenever a, b, andc are real numbers.
Proved that min(a, min(b, c)) = min(min(a, b), c) for any real numbers a, b, and c, we can use a proof by cases. We will consider the possible relationships between the three values.
Three real numbers a,b and c
Case 1: If a ≤ b and a ≤ c, then min(a,min(b,c))= a.We have 2 sub-cases here:
1. When b ≤ c. Then, min(min(a,b),c)= min(a,b) = a. Therefore, min(a,min(b,c))= min(min(a,b),c)
2. When c ≤ b. Then, min(min(a,b),c)= min(a,c) = a. Therefore, min(a,min(b,c))= min(min(a,b),c)
Case 2: If b ≤ a and b ≤ c, then min(a,min(b,c))= b. We have 2 sub-cases here:
1. When a ≤ c. Then, min(min(a,b),c)= min(a,b) = b. Therefore, min(a,min(b,c))= min(min(a,b),c)
2. When c ≤ a. Then, min(min(a,b),c)= min(c,b) = b. Therefore, min(a,min(b,c))= min(min(a,b),c)
Case 3: If c ≤ a and c ≤ b, then min(a,min(b,c))= c. We have 2 sub-cases here:
1. When a ≤ b. Then, min(min(a,b),c)= min(a,c) = c. Therefore, min(a,min(b,c))= min(min(a,b),c)
2. When b ≤ a. Then, min(min(a,b),c)= min(b,c) = c. Therefore, min(a,min(b,c))= min(min(a,b),c)Therefore, min(a,min(b,c))= min(min(a,b),c) whenever a, b, and c are real numbers.
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In 1895 , the first a sporting event was held. The winner's prize money was $140. In 2007 , the winner's check was $1,171,000. (Do not round your intermediate calculations.) Required: (a)What was the percentage increase per year in the winner's check over this period? (b)If the winner's prize increases at the same rate, what will it be in 2040?
The percentage increase per year in the winner's check over the given period. If the winner's prize increases at the same rate, it will be $1,454,735,139.69 in 2040.
To calculate the percentage increase per year in the winner's check over the period from 1895 to 2007, we can use the following formula:
Percentage Increase = (Final Value - Initial Value) / Initial Value * 100
a. Calculating the percentage increase:
Initial Value = $140
Final Value = $1,171,000
Percentage Increase = (1,171,000 - 140) / 140 * 100 ≈ 835,714.29%
b. To estimate the winner's prize in 2040, we can assume the same annual percentage increase will continue. We need to calculate the number of years from 2007 to 2040 and apply the percentage increase to the 2007 prize.
Number of years = 2040 - 2007 = 33 years
Estimated prize in 2040 = 1,171,000 * (1 + (Percentage Increase / 100))^33
Estimated prize in 2040 = 1,171,000 * (1 + (835,714.29 / 100))^33 ≈ $1,454,735,139.69
Therefore, if the winner's prize increases at the same rate, it is estimated to be approximately $1,454,735,139.69 in 2040.
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Find the product.
(4x - 3y) (2x + y)
Answer:
8x^2 - 2xy + 3y^2
Step-by-step explanation:
Use the FOIL method
8x^2 + 4xy - 6xy + 3y^2
8x^2 - 2xy + 3y^2
Assume P is the incenter of AHJK. If LP = 4x + 10 and MP = 8x - 2, what is the radius of the inscribed circle of AHJK?
Answer: C
The radius of the inscribed circle of AHJK is equal to the inradius of the triangle, which is denoted as r.
Since P is the incenter of the triangle, the inradius is equal to the distance from P to each of the sides of the triangle. Let's call these distances a, b, and c.
You know that LP = 4x + 10 and MP = 8x - 2. The length of the inradius can be expressed as:
r = (a+b-c)/2
You can now use this equation and the given information to solve for r.
Since LP is the distance from P to side L, we can set a = 4x + 10.
Since MP is the distance from P to side M, we can set b = 8x - 2.
Substituting these values into the equation for r, you get:
r = ((4x + 10) + (8x - 2) - c) / 2
= (12x + 8 - c) / 2
You can simplify this to:
r = 6x + 4 - c/2
Thus, the radius of the inscribed circle of AHJK is equal to 6x + 4 - c/2. To find the exact value of the radius, you need to know the value of c.
4a) Solve each equation.
Answer:
Subtract 7 from both sides which gives you 2x=12
x=6
which equation represents the line that passes through the points (6, -3) and (-4,-9)
A. y + 4= 3/5(x+9)
B.y + 4= 5/3(x+9)
C.y - 3=3/5(x+9)
D.y + 3=3/5(x-6)
Answer:
b is the answer
Step-by-step explanation:
If equilateral polygon PENTA is inscribed in a circle of radius 15 inches so that Al of its vertices are on the circle what is the length of the shorter arc from vertex P to vertex N
The length of the shorter arc from vertex P to vertex N is 37.68 inches.
What are Polygons?In a two-dimensional plane, a polygon is a closed object formed of line segments rather than curves. Polygon is a word that combines the words poly (which means numerous) and gon (which means sides).
To create a closed figure, at least three line segments must be connected end to end.
Given an equilateral polygon, PENTA is inscribed in a circle of radius 15 inches,
The central angle of the polygon leaning to the shortest chord is
α = 2π/5
α = 2*360/5 = 72°
The central angle of the polygon leaning to the shorter arc from vertex P to vertex N is
β = 2(2π/5)
β = 144°
The length of the corresponding arc is
= r*β
here r = 15 inches, and π = 3.14
length = r*2*2π/5
length = 15*2*2(3.14/5)
length = 37.68 inches.
Hence length is 37.68 inches.
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The variable whose effect on the response variable is to be assessed by the experimenter.
In an experiment, the variable being measured or tested is known as the dependent variable.
What is dependent variable?Any variable whose value depends on an independent variable is said to be dependent. The thing being measured in an experiment or assessed in a mathematical equation is the dependent variable. Sometimes the dependent variable is referred to as "the result variable." A dependent variable is one that depends on the value of another variable in an expression. As an illustration, if y = 2x, then y relies on x Consequently, y Equals 2 if x = 1. The independent variable is the one whose value is unrelated to the other variables. The dependent variable is the one whose value depends on the independent variable. When the same line is written in two different ways so that there are infinite solutions, an equation system is referred to as dependent.To learn more about dependent variable, refer to:
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a marathon is a 26.2-mile race that commemorates the run made by a greek soldier, pheidippides, that took place in 490 bce. how many kilometers did he run? (note: 1 mi
He ran 42.1 kilometers.
Define conversion.A conversion factor is a number that is used to multiply or divide one set of units into another. If a conversion is required, it must be done using the correct conversion factor to get an identical value. For instance, 12 inches equals one foot when converting between inches and feet. The act or process of transforming something into a different condition or form is known as conversion. to convert a value or expression between two different forms. • Measurement: converting between different units, for as from inches to millimeters or liters to gallons. For instance, change 12 inches to millimeters. 304.8 millimeters are equal to 12 inches multiplied by the inch-to-millimeter ratio of 25.4.
Given,
A marathon is a 26.2-mile race that commemorates the run made by a greek soldier, pheidippides, that took place in 490 bce.
1 mile = 1.609
Converting miles into kilometer:
26.2 miles
= 26.2 × 1.609
= 42.1
He ran 42.1 kilometers.
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Draw a model for the fraction 1/6
Answer:
Hope the picture helps you draw.
Step-by-step explanation:
How do you solve quotients step by step?
We can Long Division method to solve quotients step by step
What is long division method and its steps ?
When splitting huge numbers, the task is divided into several sequential parts using the long division approach. The dividend is divided by the divisor, just as in conventional division problems, and the result is known as the quotient; occasionally, it also produces a remainder.
We need to comprehend a few stages in order to divide. A vinculum or right parenthesis separates the dividend from the quotient, while a vertical bar separates the divisor from the dividend. Let's now go through the long division stages listed below to comprehend the procedure.
1. Take the dividend's first digit starting from the left . Verify if this digit exceeds or is equal to the divisor.
2. Next, divide it by the divisor, and write the result as the quotient on top.
3. Subtract the outcome from the digit, and then put the difference below.
Step 4: Decrease the dividend's subsequent digit (if present).
Step 5: Carry out Step 4 again.
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Select one of the options below as your answer:
A. Gary: The balance in his check register is $500 and the balance in his bank statement is $500.
B. Gail: The balance in her check register is $400 and the balance in her bank statement is $500.
C. Gavin: The balance in his check register is $500 and the balance in his bank statement is $510.
The statement that shows a discrepancy between the check register and bank statement is: C. Gavin: The balance in his check register is $500 and the balance in his bank statement is $510.
The check register shows a balance of $500, while the bank statement shows a balance of $510.
In the case of Gavin, where the balance in his check register is $500 and the balance in his bank statement is $510, there is a $10 discrepancy between the two.
A possible explanation for this discrepancy could be outstanding checks or deposits that have not yet cleared or been recorded in either the check register or the bank statement.
For example, Gavin might have written a check for $20 that has not been cashed or processed by the bank yet. Therefore, the check register still reflects the $20 in his balance, while the bank statement does not show the deduction. Similarly, Gavin may have made a deposit of $10 that has not yet been credited to his account in the bank statement.
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Find 20% of 150
A. 20
B. 130
C. 120
D. 30
For this, multiply 150 × .20 = 30
Therefore, 20% of 150 is 30.
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the perimeter of a isosceles triangle is 5(2+root2) find the area
Answer:
12.5
Step-by-step explanation:
If an isosceles right triangle as the length of the equal sides is a , then the length of the hypotenuse will be a2–√ (using pythogoras theorem.
Hence the perimeter will be a+a+a2–√=a(2+2–√)
Hence the equal sides of the triangle in question has the length of a=5
Area of the triangle = 12∗Height∗Base
=12∗5∗5=12.5
when two fractions are added the result is 3/5 if 23/25 is one of the fractions find the other fraction
Answer:
-8/25
Step-by-step explanation:
Since the sum of two fractions x and 23/25 is 3/5, the formula for finding x would be 3/5 - 23/25 = x. Simply calculate this and we get -->
-8/25
hope this helps!
Answer:
x = -8/25
Step-by-step explanation:
x + 23/25 = 3/5
Get a common denominator
x + 23/25 = 3/5 *5/5
x + 23/25 = 15/25
Subtract 23/25 from each side
x = 15/25 - 23/25
x = -8/25
Ana conducts a study using a /-test to see if there is a difference in the mean number of cups of coffee consumed between men and women. The null hypothesis would state that the population mean number of cups of coffee that women drink would _______ the population mean number cups of coffee that men drink.
The null hypothesis would state that the population mean number of cups of coffee that women would drink 32% the population mean number cups of coffee than men drink.
What is meant by percentage?The term "percentage" comes from the Latin phrase "per centum," which means "by the hundred." With 100 as the denominator, percentages are fractions. In other words, it is a relationship where the value of the entire is always assumed to be 100.
Percentage is a fraction or a ratio in which the value of whole is always 100. For example, if Sam received 30% on his math test, he received 30 points out of 100. It is expressed as 30/100 in fractional form and 30:100 in ratio form.
A certain number or quantity in every hundred is referred to as a percentage. It is a fraction, and the denominator is 100.
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a.)find the open interval on which the function H(t)=t^12-6/7t^14 is increasing and decreasing.
b.)identify the functions local and absolute extreme values, if any, saying where they occur.
Therefore, H(t) is increasing on the intervals (-∞, -1/\(\sqrt7\)) and (\(1/\sqrt7\), ∞) and decreasing on the interval (\(-1/\sqrt7\), \(1/\sqrt7\)).and There are no local or absolute maximum values for H(t).
To find the intervals on which the function H(t) is increasing or decreasing, we need to take the first derivative of H(t) and find its critical points.
a.) First derivative of H(t):
\(H'(t) = 12t^11 - 84/7t^13\)
\(= 12t^11(1 - 7t^2)/7t^2\)
The critical points are where H'(t) = 0 or H'(t) is undefined.
So, setting H'(t) = 0, we get:
\(12t^11(1 - 7t^2)/7t^2 = 0\)
\(t = 0\) or t = ±(\(1/\sqrt7\))
H'(t) is undefined at t = 0.
Now, we can use the first derivative test to determine the intervals on which H(t) is increasing or decreasing. We can do this by choosing test points between the critical points and checking whether the derivative is positive or negative at those points.
Test point: -1
\(H'(-1) = 12(-1)^11(1 - 7(-1)^2)/7(-1)^2 = -12/7 < 0\)
Test point: (-1/√7)
\(H'(-1/\sqrt7) = 12(-1/\sqrt7)^11(1 - 7(-1/\sqrt7)^2)/7(-1/\sqrt7)^2 = 12/7\sqrt7 > 0\)
Test point: (1/√7)
\(H'(1/\sqrt7) = 12(1/\sqrt7)^11(1 - 7(1/\sqrt7)^2)/7(1/\sqrt7)^2 = -12/7\sqrt7 < 0\)
Test point: 1
\(H'(1) = 12(1)^11(1 - 7(1)^2)/7(1)^2 = 5/7 > 0\)
Therefore, H(t) is increasing on the intervals (-∞, -1/√7) and (1/√7, ∞) and decreasing on the interval (-1/√7, 1/√7).
b.) To find the local and absolute extreme values of H(t), we need to check the critical points and the endpoints of the intervals.
Critical points:
\(H(-1/\sqrt7) \approx -0.3497\)
\(H(0) = 0\)
\(H(1/\sqrt7) \approx-0.3497\)
Endpoints:
H (-∞) = -∞
H (∞) = ∞
Since H (-∞) is negative and H (∞) is positive, there must be a global minimum at some point between -1/√7 and 1/√7. The function is symmetric about the y-axis, so the global minimum occurs at t = 0, which is also a local minimum. Therefore, the absolute minimum of H(t) is 0, which occurs at t = 0.
There are no local or absolute maximum values for H(t).
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What is the probability of picking a 7 from a standard deck of 52 cards?
Answer Choice:
(A) 3/4
(B) 1/2
(C) 4/13
(D) 1/13
Answer:
(c)- 4/13
Step-by-step explanation:
There are 4 types of cards in a ordinary deck clovers, diamands, hearts, and spades
each set has 1 seven each, so 4 sevens total.
Also, each type of card has 13 different cards in it
so, your answer is 4/13
PLEASE HELP
Eleanor and Max used two rectangular pieces of plywood, placed end-to-end, to make a long rectangular stage for the school play. One board was 4 feet long, and the other was 4 1/2 feet long. The two pieces of plywood had equal widths. The total area of the stage was 44 5/8 square feet. What was the width of the plywood?
solve 4/r = 5/20 will mark brainliest
Answer:
= 16
Step-by-step explanation:
Simplify \frac{5}{20}
20
5
to \frac{1}{4}
4
1
.
\frac{4}{r}=\frac{1}{4}
r
4
=
4
1
2 Multiply both sides by rr.
4=\frac{1}{4}r4=
4
1
r
3 Simplify \frac{1}{4}r
4
1
r to \frac{r}{4}
4
r
.
4=\frac{r}{4}4=
4
r
4 Multiply both sides by 44.
4\times 4=r4×4=r
5 Simplify 4\times 44×4 to 1616.
16=r16=r
6 Switch sides.
r=16r=16
Consider two mugs. The first contains two white and seven black balls, and the second contains five white and six black balls. We flip a fair coin and then draw a ball from the first mug or the second mug depending on whether the outcome was heads or tails, respectively. What is the conditional probability that the outcome of the toss was heads given that a white ball was selected
The conditional probability that the outcome of the coin toss was heads can be calculated using Bayes' theorem. The conditional probability that the outcome of the toss was heads given that a white ball was selected is 26/63.
Let's denote H as the event that the outcome of the coin toss was heads, and W as the event that a white ball was selected. We want to find P(H|W), the probability of the coin toss being heads given that a white ball was selected.
According to Bayes' theorem, we have:
P(H|W) = P(W|H) * P(H) / P(W)
P(W|H) is the probability of selecting a white ball given that the outcome of the coin toss was headed. Since the first mug is chosen in this case, which contains two white balls out of a total of nine balls, P(W|H) = 2/9.
P(H) is the probability of the coin toss being heads, which is 1/2 since the coin is fair.
P(W) is the probability of selecting a white ball, regardless of the outcome of the coin toss. There are a total of seven white balls out of thirteen balls (two from the first mug and five from the second mug), so P(W) = 7/13.
Therefore, substituting these values into Bayes' theorem:
P(H|W) = (2/9) * (1/2) / (7/13)
Simplifying this expression:
P(H|W) = 26/63
Therefore, the conditional probability that the outcome of the toss was heads given that a white ball was selected is 26/63.
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In the diagram below, AB || DF, m/DCE = 104° and
m/CEF = 145°. Find m/B.
Step
1
2
try
Angle
m/DCE = 104°
-
m/CEF = 145°
m/
Select a Reason
Reason
Given
Given
The measure of <B is 41 degree.
What is Property of Parallel line?The fundamental characteristics listed below make it simple to recognize parallel lines.
Straight lines that are always the same distance apart from one another are called parallel lines.No matter how far apart they are from one another, parallel lines can never intersect.Given:
m<CEF = 145°
m<DCE = 104°
So, <FEC+ <CEB = 180 {Linear Pair}
<CEB = 180- 145
<CEB = 35 degree.
<BCA = < ECB= 104 {Vertically Opposite Angle}
Now, In ΔABC
< ABC+ <BAC + <CAB = 180
104+ 35 + <ABC = 180
<ABC = 180 - 139
m<ABC= 41 degree.
Hence, the measure of <B is 41 degree.
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Can someone plz help me with this one problem plzzzzz I’m marking brainliest!!!
Also when you pick the graph just say 1st or 2nd graph!!!
Answer:
1st
Step-by-step explanation: i think
if my avg is a 96 and my final exam is a 75 which is 25% of my whole grade what will my final grade be
Step-by-step explanation:
That means the 96 is 75% of your grade
96 (.75) + 75 (.25) = 90.75 final grade
Bryanne bought a loaf of bread that is shaped like a rectangular prism. She then cut the loaf of bread.
Select two shapes that could be cross-sections of this loaf.
A.
circle
B.
ellipse
C.
triangle
D
trapezoid
Gabrielle hires someone to fix her busted
pipes under her floor. She is told that she
will be charged an initial service fee and $45
per hour. Her bill was $825 after 15 hours
of work. Write a linear equation
representing the total she has to pay based
on the hours worked. Determine the amount
of the initial service fee. Create a table of values for at
least 5 points of data (5 rows). Graph the information and
be sure to include labels.
Answer:
She paid $675.00, How is because she was paying $45 dollars per hours so $45 x 15 is $675.00 dollars.