Answer:
Step-by-step explanation:
Identify: Hypothesized π = 0.22 n =1189 X = 230
Estimate the sample proportion, p, of defective items. p= X/n = 230/1189 = 0.1934
List the formula for the standard error of a proportion. \(\sqrt{PQ/n}\)
Estimate the standard error of a proportion. \(\sqrt{PQ/n} = \sqrt{0.22\times 0.78/1189} = 0.0120\)
State the null and alternative hypotheses below.
H0: P = 0.22
H1: P<0.22
Illustrate the acceptance and rejection regions of the diagram to the right.
check the attached image below for the diagram
Identify the critical Z , -1.645
Fornulate the decision rule and list below.
If Z calculated is less than Z critical we reject null hypothesis
Calculate your test statistic.
\(Z= \frac{p-P}{\sqrt{PQ/n}} = \frac{0.1934-0.22}{0.0120}= -2.217\)
Do you accept or reject the null hypothesis at 0.05 level of significance? Reject
State your conclusion. Should the quality control manage accept the shipment or return it?
WE have sufficient evidence that the population proportion of "like the ads a lot" for the company's ads is less than 0.22 at a 0.05 level of significance.
If a 0.01 level of significance had been used in the test, would you have accepted or rejected the null hypothesis?
at 0.01 level of significance the critical value of Z is -2.33
Since Z calculated is greater than Z critical value we accept the null hypothesis
Find the area and perimeter of the parallelogram. (Hint: Don't forget your units!)
7 cm
8 cm
4 cm
The area and perimeter of the parallelogram are: 56 square units and 30 units respectively
What is a parallelogram?In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure
The parameters that will help us do the math are
base = 7
height = 8
Area = 8*7 = 56 square units
perimeter 2b + 2h
perimeter = 2*7 + 2*8
= 14 +16
P = 30 units
Therefore, the perimeter of the parallelogram and area are 30 units and 56 square units
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An angle measures ten degrees more than its complement. What is the measurement of the angle?
Let x be the measurement of the angle.
The complement of an angle is 90 degrees minus the measurement of the angle.
So, the complement of x is 90 - x.
The problem states that x is 10 degrees more than its complement.
So, we can write the equation x = 10 + (90 - x).
Combining like terms, we get 2x = 100.
Dividing both sides by 2, we get x = 50.
Therefore, the measurement of the angle is 50 degrees.
Use the following predicates when describing an object: Green, Blue, Red, Rectangle, Oval, Diamond, Border For example: Green(H) = True because object H is green Border(H) = False because object H has no border Problem 6 [21 points] For each statement below, write the contrapositive, the converse and the inverse using english (no logical operators needed). Tell which of the four statements (the three you wrote, in addition to the original statement) is true or false. If a statement is false, provide a counter-example. (example) Original Conditional Statement (P - Q): If an object is green, then it is a rectangle. False. Object H is green but it is also not a rectangle. Contrapositive (not Q - not P): If an object is not a rectangle then it is not green. False. Object H is not a rectangle but it is also green. Converse (Q - P) If an object is a rectangle then it is green. False. Object P is a rectangle but it is also not green. Inverse (not p → not q) If an object is not green then it is not a rectangle. False. Object P is not green but it is also a rectangle. (a) If an object is red, then it has a border. (b) If an object is a rectangle, then it is red and has a border. (c) If an object is red or blue then it has a border.
(a)Contrapositive: If an object does not have a border, then it is not red.
Converse: If an object has a border, then it is red.
Inverse: If an object is not red, then it does not have a border.
(b)Contrapositive: If an object is not red or does not have a border, then it is not a rectangle.
Converse: If an object is a rectangle, then it is red and has a border.
Inverse: If an object is not red or does not have a border, then it is not a rectangle.
(c)Contrapositive: If an object does not have a border, then it is not red or blue.
Converse: If an object is red or blue, then it has a border.
Inverse: If an object does not have a border, then it is not red or blue.
a) Original Conditional Statement (P - Q): If an object is red, then it has a border.
Contrapositive (not Q - not P): If an object does not have a border, then it is not red.
Converse (Q - P) If an object has a border then it is red.
Inverse (not p → not q) If an object is not red then it does not have a border.
The contrapositive is true, while the converse and inverse are false. For example, object H may have a border but not be red.
b) Original Conditional Statement (P - Q): If an object is a rectangle, then it is red and has a border.
Contrapositive (not Q - not P): If an object is not red and does not have a border, then it is not a rectangle.
Converse (Q - P) If an object is red and has a border, then it is a rectangle.
Inverse (not p → not q) If an object is not a rectangle then it is not red or does not have a border.
The contrapositive is true, while the converse and inverse are false. For example, object H may be red and have a border but not be a rectangle.
c) Original Conditional Statement (P - Q): If an object is red or blue, then it has a border.
Contrapositive (not Q - not P): If an object does not have a border, then it is not red or blue.
Converse (Q - P) If an object has a border then it is red or blue.
Inverse (not p → not q) If an object is not red or blue then it does not have a border.
The contrapositive and converse are true, while the inverse is false. For example, object H may have a border but not be red or blue.
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Question 2(Multiple Choice Worth 2 points)
(Slope-Intercept Form MC)
The table shown represents a linear relationship.
x 0 1 3 4
y −8 −6 −2 0
Based on the table, what is the equation of the linear relationship in slope-intercept form?
y = 2x − 8
y = 2x + 8
y = −2x + 4
y = −2x − 4
The equation of the linear relationship in slope-intercept form is y = 2x - 8. Option A is the correct answer.
To determine the equation of the linear relationship in slope-intercept form based on the table, we need to find the slope and y-intercept.
By observing the table, we can calculate the slope by selecting any two points. Let's choose the points (0, -8) and (4, 0).
Slope (m) = (change in y) / (change in x)
= (0 - (-8)) / (4 - 0)
= 8 / 4
= 2
Now that we have the slope, we can find the y-intercept by substituting the values of one point and the slope into the equation y = mx + b and solving for b.
Using the point (0, -8):
-8 = 2(0) + b
b = -8
Therefore, the equation of the linear relationship in slope-intercept form is: y = 2x - 8. Option A is the correct answer.
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I need helllllllllllllllllp
Answer: A = 3
Step-by-step explanation:
4x-2=10
4x=12
x =12/4
x=3
Si tengo 10 melones y voy a repartir entre 15 niños cuánto le toca a cada uno
Answer:
0.66 melones por niño o 2/3
Step-by-step explanation:
10/15=2/3=0.66
suppose a population consists of 5000 being surveyed could result in sample statistic but not parameter
there are 12 space suits that fit into one box. how many are needed for 2400 space suits
Answer:
200 boxes
Step-by-step explanation:
We can use ratios to solve
12 suits 2400 suits
------------ = ------------
1 box x boxes
Using cross products
12x = 1*2400
12x = 2400
Divide by 12
12x/12 = 2400/12
x =200
We need 200 boxes
Answer:
200
Step-by-step explanation:
1 box = 12
Box? = 2400.
DIVIDE
Find the slope of the line that passes through the points (2,8) and (6,8).
Answer:
8-8/6-2
0/4
answer is 0
y=0x+c
8=0(2)+c
8=0+c
8=c
y=0x+8 i thinkkk
Step-by-step explanation:
Answer:
8-8/6-2
0/4
answer is 0
y=0x+c
8=0(2)+c
8=0+c
8=c
y=0x+8
Step-by-step explanation:
HELP!!!!!!!! Which system of linear equations can be solved using the information below?
The system of linear equations that can be solved from the matrices is given as follows:
-5x + 4y = 3.-8x + y = -6.How to obtain the system of equations?Considering that the row [3, -6] is common to matrices Ax and Ay, the matrix A is given as follows:
A = [-5 4; -8 1]
Hence the multiplication of matrices representing the system is given as follows:
[-5 4; -8 1][x; y] = [3; -6]
Applying the multiplication of matrices, the system of equations is given as follows:
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You have used the Distributive Property to transform numerical expressions such as (5)(3) + (2)(3) to (5 + 2)(3). How would you transform 5x + 2x into a single term? Substitute five different values into the expressions 5x + 2x and 7x - 1. What do you notice about the values of the expressions? Is there any value that would make the two expressions equal? Why or why not?
Step-by-step explanation:
5x + 2x
that is the same as (5 + 2)x
and that is the same as (7)x = 7x
so, for the second part of the problem we are actually comparing
7x
and
7x - 1
there is therefore no way for the two expressions to deliver the same value for the same x.
the values of 7x are always larger by one than the values of 7x - 1
so, e.g.
x = 1
5×1 + 2×1 = 5 + 2 = 7
7×1 - 1 = 7 - 1 = 6
x = 2
5×2 + 2×2 = 10 + 4 = 14
7×2 - 1 = 14 - 1 = 13
x = 3
5×3 + 2×3 = 15 + 6 = 21
7×3 - 1 = 21 - 1 = 20
x = 4
5×4 + 2×4 = 20 + 8 = 28
7×4 - 1 = 28 - 1 = 27
x = 5
5×5 + 2×5 = 25 + 10 = 35
7×5 - 1 = 35 - 1 = 34
Mike Danes has been delayed in going to the annual sales event at one of his favorite apparel stores. His friend has just texted him that there are only 20 shirts left, of which 8 are in size M, 10 in size L, and 2 in size XL. Also 9 of the shirts are white, 5 are blue, and the remaining are of mixed colors. Mike is interested in getting a white or a blue shirt in size L. Define the events A = Getting a white or a blue shirt and B = Getting a shirt in size L. a. Find P(A), P(A^c), and P(B). b. Are the events A and B mutually exclusive? Explain. c. Would you describe Mike's preference by the events A u B or A n B?
a) Probability of occurrence of evant A is equals to the 7/10.
P(not getting a white or a blue shirt), P(Aᶜ ) is equals the 3/10.
Probability of occurrence of evant B is equal to the 1/2.
b) The events A and B are not mutually exclusive
c) Mike's preference is to getting a white shirt with his size L.
We have a probabality based problem. Probability is defined as chance of occurrence of an event or result. It can be calculate as favourable outcomes divided by total possible outcomes. There is total number of avaliabile shirts = 20 i.e., total possible outcomes = 20
Mike is interested in getting a white or a blue shirt in size L. Let us consider two events :
A : Getting a white or a blue shirt
B: Getting a shirt in size L
a) Number of favourable outcomes to getting white or a blue shirt = 9 white or 5 blues
Probability ( Getting a white or a blue shirt) , P(A)
= 9/20 + 5/20 + 0 = 14/20 = 7/10
P(not Getting a white or a blue shirt), P(Aᶜ )
= 1 - P(A) = 1 - 7/10 = 3/10
ii) The number of favourable outcomes for event B, n(B) = 10
So, Probability of getting a shirt in size L, P(B)
= 10/20 = 1/2
b) Mutually exclusive events are defined as the events that can't happen at the same time. In other words AnB = 0 . Here, we see there is total 14 shirts which are in white or blue colors and 10 are in size L , So there is possibility that shirt is white or blue in colour and in size L , i.e, An B ≠0
So, events A and B are not mutually exclusive.
c) Event ,n( A u B )= n(A) + n(B) - n(A n B)
On the basis of all details, we conclude that Mike's preference is to choose white shirt with size L .
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Explain your steps to solve 3x +4/+2 = 29.
Answer:
X=18
Step-by-step explanation:
3x+4/2 = 29
Multiply both sides by 2 :
2(3x+4)/2 = 29*2
Simplify :
3x+4= 58
Subtract 4 from both sides :
3x + 4 - 4 = 58 - 4
Simplify :
3x = 54
Divide both sides by 3:
3x / 3 = 54 /3
Simplify :
X = 18
Hope it Helps :) !!!!
Convert 4 3/5 to a fraction greater than one
Answer:
23/5
Step-by-step explanation:
* means multiply
4 3/5
5 * 4 = 20
20 + 3 = 23
23/5
Answer:
\(\frac{23}{5}\)
Step-by-step explanation:
The type of fraction we are dealing with is called a mixed fraction
In order to convert this fraction into a fraction greater than 1, we will have to convert it into an improper fraction
So we keep the denominator
Multiply the whole number by the denominator and add that to the numerator
Original price of shorts $53.95 Discount 30% Tax 4.5?
Please help what’s the correct answer ???
Answer:
72.8325
Step-by-step explanation:
I think it is that
2. The medical tax credit for a person belonging to a registered medic scheme is shown in the table below: Medical aid tax credit rates for the 2019 to 2020 tax years. Member Monthly Tax Credit Main member R310 1st dependant R310 Other dependants (each) R209 1.2.1 Determine this family's annual medical aid tax credit.
Answer:
the family annual aid tax is R3500
Match the later drop-down
1) The expression 2⁻ˣ⁺³ = 3 is matched with graph B.
2 The expression 3ˣ⁺¹=3 is matched with graph C.
3) The expression 4ˣ = 3 is matched with graph
4 ) The expression 1ˣ/4 = 3 is matched with graph
What is the explanation for the above?1) The graph of the expression 2⁻ˣ⁺³ = 3 represents an exponential function where the y-coordinate is 3 when the base 2 raised to the power of (-x+3).
2) The graph of the expression 3ˣ⁺¹=3represents an exponential function where the y-coordinate is 3 when the base 3 raised to the power of (x+1). This graph is a straight line with a slope of 1.
3) The graph of the equation 4ˣ = 3 represents an exponential function where the base 4 raised to the power of x is equal to 3. This equation has a single solution, which can be determined using logarithms.
4) The graph of the expression 1ˣ/4 = 3 represents an exponential function where the base 1 raised to the power of (x/4) is equal to 3.
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How much more? To the nearest tent, it holds ___ cubic meters more than the other glass
Answer:
glassA=1/3×22/7×4²
=16.76
glass B=1/3×22/7×3²
=9.42
glass A is the correct answer
The base of the mountain is 6,500 feet above sea level and AB measures 230 feet across. Given that the measurements for QAP is 20° and QBP is 35°, how far above sea level is peak P ? Express your answer to the nearest foot.
Height above sea level:
Answer:
6610
Step-by-step explanation:
We have tan(X) = opposite/ adjacent
tan(QBP) = PQ/BQ
tan(35) = PQ/BQ ---eq(1)
tan(QAP) = PQ/AQ
tan(20) = \(\frac{PQ}{AB +BQ}\)
\(=\frac{1}{\frac{AB+BQ}{PQ} } \\\\=\frac{1}{\frac{AB}{PQ} +\frac{BQ}{PQ} } \\\\= \frac{1}{\frac{230}{PQ} + tan(35)} \;\;\;(from\;eq(1))\\\\= \frac{1}{\frac{230 + PQ tan(35)}{PQ} } \\\\= \frac{PQ}{230+PQ tan(35)}\)
230*tan(20) + PQ*tan(20)*tan(35) = PQ
⇒ 230 tan(20) = PQ - PQ*tan(20)*tan(35)
⇒ 230 tan(20) = PQ[1 - tan(20)*tan(35)]
\(PQ = \frac{230 tan(20)}{1 - tan(20)tan(35)}\)
\(= \frac{230*0.36}{1 - 0.36*0.7}\\\\= \frac{82.8}{1-0.25} \\\\=\frac{82.8}{0.75} \\\\= 110.4\)
PQ = 110.4
≈110
Height above sea level = 6500 + PQ
6500 + 110
= 6610
Identify the next number in the following sequence
25 49 97 ?
Select only one answer
- 124
- 171
- 139
- 193
Answer:
the correct answer is 193
Step-by-step explanation:
25×1-0=25
25×2-1=49
49×2-1=97
97×2-1=193
help pls the question is in the picture
Answer:
\(\neq \neq \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \geq x^{2} x^{2} \sqrt{x} \frac{x}{y} x_{123} x_{123}\)
Step-by-step explanation:
yeah
HELP WILL GIVE BRIANLIEST
Which of the following best demonstrates the Distributive Property?
3 ( 2+ 4) = 4 ( 3+2)
4 ( 5 + 2) = 10 + 2
4 (5 + 6) = 4 * 11
3 + 6 + 2 = 2 + 3 + 6
Answer:
The 2nd equation
1). Can you find the inverse of the function y = 4x^2 + 12x + 9? Why or why not?
2). What domain restrictions are necessary to allow the function to have an inverse?
3). Find the inverse of the domain restricted function.
The function f(x) = 4x² + 12x + 9 has an inverse f⁻¹(x) = -(3 - √x)/2 , (3 + √x) / 2 and the restriction of it's domain is for all values of x
Inverse of a FunctionAn inverse function or an anti function is defined as a function, which can reverse into another function. In simple words, if any function “f” takes x to y then, the inverse of “f” will take y to x.
The function f(x) = 4x² + 12x + 9 has an inverse of
f⁻¹(x) = -(3 - √x)/2 , (3 + √x) / 2
2).
The domain of the given function is for all values of x and can be represented in function notation as
domain = (-∞, ∞)
3) The inverse of the domain function is for all values greater than or equal to x or can be represented as [0, ∞)
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Answer:
1) No, as it is not a one-to-one function.
2) The domain should be restricted to either the left or the right of the vertex.
\(\textsf{3)} \quad f^{-1}(x)=\dfrac{-3 + \sqrt{x}}{2}\)
Step-by-step explanation:
Question 1To determine if the function y = 4x² + 12x + 9 has an inverse, we need to check if it is a one-to-one function.
A function has an inverse if and only if it is one-to-one, meaning that each input value (x) corresponds to a unique output value (y), and no two different x-values produce the same y-value.
To check if y = 4x² + 12x + 9 is one-to-one, we can use the horizontal line test. If any horizontal line intersects the graph of the function at more than one point, the function is not one-to-one, and hence, it does not have an inverse.
The function y = 4x² + 12x + 9 is a quadratic function, and all quadratic functions have a U-shaped graph, which means any horizontal line intersects the graph at two points. Therefore, the function y = 4x² + 12x + 9 is not one-to-one, and it does not have an inverse.
\(\hrulefill\)
Question 2To allow the function y = 4x² + 12x + 9 to have an inverse, we need to restrict its domain to make it one-to-one. Since the function is a parabola that opens upwards and has its vertex at the minimum point, we can restrict the domain to only consider the portion of the parabola to the right (or left) of the vertex. By doing this, we can make the function one-to-one and allow it to have an inverse.
\(\hrulefill\)
Question 3The x-coordinate of the vertex of a quadratic function in the form y = ax² + bx + c is x = -b/2a. Therefore, the x-coordinate of the vertex of the given function is:
\(x=-\dfrac{12}{2(4)}=-\dfrac{12}{8}=-1.5\)
To find the y-coordinate of the vertex, substitute x = -1.5 into the given function:
\(y=4(-1.5)^2+12(-1.5)+9\)
\(y=4(2.25)+12(-1.5)+9\)
\(y=9-18+9\\\)
\(y=0\)
Therefore, the vertex of given function is (-1.5, 0).
Let's restrict the domain to the right of the vertex.
Therefore, the restricted domain is [-1.5, ∞).
To find the inverse of the domain-restricted function, swap x and y:
\(x = 4y^2 + 12y + 9\)
Switch sides:
\(4y^2 + 12y + 9=x\)
Subtract x from both sides:
\(4y^2 + 12y + 9-x=0\)
Now we can use the quadratic formula to find y, where a = 4, b = 12 and c = (9 - x):
\(y=\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}\)
\(y=\dfrac{-12 \pm \sqrt{(12)^2-4(4)(9-x)}}{2(4)}\)
\(y=\dfrac{-12 \pm \sqrt{144-144+16x}}{8}\)
\(y=\dfrac{-12 \pm \sqrt{16x}}{8}\)
\(y=\dfrac{-12 \pm 4\sqrt{x}}{8}\)
\(y=\dfrac{-3 \pm \sqrt{x}}{2}\)
Replace y with f⁻¹(x):
\(f^{-1}(x)=\dfrac{-3 \pm \sqrt{x}}{2}\)
The range of the inverse function is the domain of the original function.
As the domain of the original function is restricted to [-1.5, ∞), then the range of the inverse function is also restricted to [-1.5, ∞).
Therefore, the inverse of the domain-restricted function is:
\(f^{-1}(x)=\dfrac{-3 + \sqrt{x}}{2}\)
suppose you have one quart of water/juice mix that is 50% juice, and you add 2 quarts of juice. what percent juice is the final mix?
If you had 1 quart and you now add 2 quarts, the total now becomes 3 quarts of water/juice mix.
So the first solution contains 1/2 quart of juice and 1/2 quart of water. Half of the first mixture and then two more parts now results in 2.5 parts of juice and half part water.
Remember its now a total of 3 parts. Therefore the juice in the mix is now;
\(\begin{gathered} \text{Juice}=\frac{2.5}{3} \\ \text{Juice}=0.8333\ldots \\ \text{Juice}=0.8333\times\frac{100}{1} \\ \text{Juice}=83.33 \end{gathered}\)The final mix therefore contains 83.33% juice
Write in Slope Intercept Form :-)
If every time Tomas ears a cookie it gives him 5 points and very time Miguel eats a cookie it gives him 15 points. When will they have the same amount of points?
Answer:
Never, unless they already have some points to even the points out
Step-by-step explanation:
what is a regression through the origin
A regression through the origin is a linear regression model where the intercept time period is assumed to be 0, meaning the regression line passes through the starting place.
This version is also referred to as zero-intercept regression or homogeneous regression.
It's far frequently used whilst there's a theoretical foundation to agree with that the relationship among the dependent and unbiased variable passes via the foundation or whilst the information propose that the intercept ought to be 0.
The slope coefficient represents the change within the structured variable for a one-unit increase inside the unbiased variable.
However, this kind of regression may not be appropriate in all cases, and a general linear regression version with an intercept term can be greater suitable.
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I NEED HELPP Solve for PMR please
The angle PMR in the quadrilateral is 32 degrees.
How to find the angle PMR?The angle PMR can be found as follows;
The line AP is an angle bisector of angle RPM. Therefore, the following relationships are formed.
∠RPM ≅ ∠WPM
Hence,
∠RPM ≅ ∠WPM = 58 degrees
Therefore,
∠WPM = 58 degrees
∠PWM = 90 degrees
Let's find ∠PMR as follows
∠PMR = 180 - 90 - 58
∠PMR = 90 - 58
∠PMR = 32 degrees
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Janie reached into her sock drawer without looking. If she has 10 loose white socks, 4 blue socks, 2 red socks, and 4 black socks in the drawer, what percent of the socks are white?
Answer:
50%
Step-by-step explanation:
10+4+2+4=20
10/20=0.5
Geometry, question attached in image.
The minimum length of wire is 34.28 inches.
We are given that;
Two circles with radii 2 and 6
Now,
By the Pythagorean theorem, MN^2 = MS^2 + SN^2 = 4"^2 + 4"^2 = 32".
Therefore, MN = sqrt(32") = 4sqrt(2") (exact answer).
To find PQ and NM, we can use the formula for the circumference of a circle: C = 2pi*r.
PQ = pi6" and NM = pi2", since they are half-circumferences of the pipes with radii 6" and 2".
Therefore, the total length of the wire is MN + PQ + NM = 4sqrt(2") + pi6" + pi2".
To get an approximate answer, we can use a calculator and round to the nearest hundredth.
Therefore, by the circle the answer will be is 34.28 inches.
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