The test is two-tailed test.
In hypothesis testing, the null hypothesis (H0) represents the default assumption or the claim of no effect or no difference. The alternative hypothesis (H1 or Ha) represents the opposite of the null hypothesis, stating that there is an effect or a difference.
In the given null and alternative hypotheses:
H0: p1 = p2
H1: p1 ≠ p2
The null hypothesis states that the proportions (p1 and p2) are equal, while the alternative hypothesis states that the proportions are not equal. This indicates a two-tailed test.
A two-tailed test is used when the alternative hypothesis is not specific about the direction of the difference or effect. It allows for the possibility of a difference in either direction, whether it is greater or smaller.
Since the null and alternative hypotheses are set up to test for a difference in proportions without specifying the direction, the test is two-tailed. This means that we will evaluate the evidence against the null hypothesis in both directions, considering the possibility of a difference in either direction.
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Which of the following correctly shows the length of each radius, the point where the circles intersect, and the equation of the tangent line at this point?
Answer:
Length of the radii of the circles → 4 units and 1 unit
Equation of common tangent → x = 4
Step-by-step explanation:
From the figure attached,
Length of radii of each circles are,
Radius of circle S = 4 units
Radius of circle T = 1 unit
Common point where the circles are touching → (4, 1)
Common tangent to these circles is a line perpendicular to x-axis passing through x = 4,
Equation of the tangent will be,
x = 4
Find m, so that (-3) m+1 × (-3)5 = (-3)7
The equivalent value of m is given by the expression m = 1
Given data ,
We can use the properties of exponents to solve this problem. Specifically, when we multiply two powers with the same base, we add their exponents.
So, we have:
(-3)^(m+1) × (-3)⁵ = (-3)⁷
Using the property of exponents, we can add the exponents on the left-hand side:
(-3)^(m+1+5) = (-3)⁷
Simplifying the exponents on the left-hand side:
(-3)^(m+6) = (-3)⁷
We know that two powers with the same base are equal if and only if their exponents are equal. So, we can set the exponents equal to each other:
m + 6 = 7
Subtracting 6 from both sides:
m = 1
Hence , m = 1 is the value that satisfies the equation
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The original price of an item is $25, but after the discount, you only have to pay $18.50. What is the discount (as a percent)
The discount is 26%.
What is Discount?The discount equals the difference between the price paid for and it's par value. Discount is a kind of reduction or deduction in the cost price of a product.
Given:
\(\bold{Marked} \ \text{price} = \$25\)
\(\bold{Selling} \ \text{price} = \$18.50\)
So,
\(\text{Discount = MP - SP}\)
\(\text{Discount} = 25-18.50\)
\(\bold{Discount} = 6.50\)
Now,
\(\text{D}\% = \dfrac{\text{D}}{\text{MP}} \times100\)
\(\text{D}\% = \dfrac{6.5}{25} \times100\)
\(\text{D}\% = 26\%\)
Hence, the discount percent is 26%.
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sum please help me ASAP on both of themmm
Answer:
7.d
8.c
Step-by-step explanation:
I looked it up to make sure! Hope this helped!
a k/n lottery requires choosing k of the numbers 1 through n. how many different lottery tickets can you choose for a 7/47 lottery? (order is not important, and the numbers do not repeat.)
There are 62,891,499 different lottery tickets you can choose for a 7/47 lottery where order is not important, and numbers do not repeat.
What is combination formula?Using a combination formula, we may extract the number of alternative arrangements from a set of objects or numbers. The combination formula, however, enables us to select a necessary item from a group of items.
To calculate the number of different lottery tickets you can choose for a 7/47 lottery, where order is not important and numbers do not repeat, we can use the concept of combinations.
In a 7/47 lottery, you need to choose 7 numbers out of 47 without considering their order and with no repetition. This can be calculated using the combination formula.
The combination formula is given by:
C(n, k) = n! / (k!(n-k)!)
Where n! represents the factorial of n, which is the product of all positive integers up to n.
In this case, we have n = 47 (the total number of available numbers) and k = 7 (the number of numbers to be chosen).
Plugging these values into the combination formula, we get:
C(47, 7) = 47! / (7!(47-7)!)
Simplifying this expression, we have:
C(47, 7) = 47! / (7! * 40!)
Since the numbers are quite large, it's more practical to use a calculator or a computer program to compute the factorial values and perform the division.
Using a calculator or a program, we find that C(47, 7) is equal to 62,891,499.
Therefore, there are 62,891,499 different lottery tickets you can choose for a 7/47 lottery where order is not important, and numbers do not repeat.
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Complete the equation of the line whose y-interceptis (0, 1) and slope is 4
Answer:
y = 4x + 1
Step-by-step explanation:
Let's start with y = mx + b
Using the point (0, 1), we get 1 = b.
The slope is 4, so now we get y = 4x + 1
when do you think collecting standard deviation would be helpful in understanding your data? are there any situations in your major or future degree or life you think that this may be helpful?
It aids in comprehending measurements when the data is scattered, standard deviation is significant. The standard deviation of the data will be higher the more evenly dispersed the data is.
Although the standard deviation is a frequently used statistic, it rarely receives the attention it merits. Although the mean and median are frequently mentioned in the news, they are rarely accompanied by any indication of how diverse the underlying data set was, so you only get a partial picture. In actuality, you might be overlooking the most captivating aspect of the tale.
What is Standard deviation?
A statistic known as the standard deviation is used to describe how volatile or dispersed a group of numerical values is. While a big standard deviation denotes that the values are scattered across a wider range, a low standard deviation indicates that the values tend to be close to the set mean.
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The temperature at 5:00 a.m. was -23 °F. By 3:00 p.m., the temperature had risen to a high of 38 °F. If the temperature at 8:00 p,m. decreased from the high by 2/5of the change in temperature in Fahrenheit degrees from 5:00 a.m. to 3:00 p.m., what was the temperature at 8:00 p.m.? Round your answer to the nearest tenths place.
Two numbers have a difference of 28. If the sum of the squares of the numbers is
392, what are the two numbers?
Answer:
The two numbers are 182 and 210. I hope this will help you.
Look over Chuck's work What is incorrect about the way Chuck interpreted his problem? What should have been a clue to Chuck that something was wrong?
The probability that a random student will be taking both Algebra 2 and Chemistry is 0.0136 or 1.36%.
To find the probability that a random student will be taking both Algebra 2 and Chemistry, we need to use the concept of conditional probability.
Let's denote the event of taking Algebra 2 as A and the event of taking Chemistry as C. We are given that P(A) = 0.08 (8% probability of taking Algebra 2) and P(C|A) = 0.17 (17% probability of taking Chemistry given that the student is taking Algebra 2).
The probability of taking both Algebra 2 and Chemistry can be calculated using the formula for conditional probability:
P(A and C) = P(C|A) * P(A)
Substituting the given values:
P(A and C) = 0.17 * 0.08
P(A and C) = 0.0136
Therefore, the probability that a random student will be taking both Algebra 2 and Chemistry is 0.0136 or 1.36%.
It is important to note that the probability of taking both Algebra 2 and Chemistry is determined by the intersection of the two events, which means students who are taking both courses. In this case, the probability is relatively low, as it depends on the individual probabilities of each course and the conditional probability given that a student is taking Algebra 2.
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A town’s population is 760 in one year and 798 the next year. By what percent did the population grow?
Answer: The answer is 38%
Jana wrote the expression 5n+3 as part of a problem she was solving. She wanted Sally to read it back to her verbally so she could check her work. Which verbal description best represents the expression 5n+3 (PLEASE ANSWER AS QUICK AS POSSIBLE!!)
Answer:
Step-by-step explanation:
Step-by-step explanation:
three more than five times some number n
Work out the size of angle x.
42°
X
123°
Answer:
99 pls five me brainiest
Step-by-step explanation:
180-123=57
180-57-42=81
180-81=99
Which equation has a value greater than 7,245? A.one-third times 7,245 equals blank B.two-thirds times 7,245 equals blank C.three-thirds times 7,245 equals blank D.three-halves times 7,245 equals blank
The equation which has a value greater than 7,245 as required in the task content is; Choice D; three-halves times 7,245 equals = 10,867.5.
What is the equation which has a value greater than 7,245?It follows from the task content that the value greater than 7,245 among the answer choices is to be determined.
First the value of each of the expressions can be evaluated as follows;
A. one-third times 7,245 equals = (1/3) × 7,245 = 2415.
B. two-thirds times 7,245 equals = (2/3) × 7,245 = 4,830.
C. three-thirds times 7,245 equals = (3/3) × 7,245 = 7,245
D. three-halves times 7,245 equals = (3/2) × 7,245 = 10,867.5
Ultimately, the required number which is greater than 7,245 is; Choice D; three-halves times 7,245 equals = 10,867.5.
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Ace Car Rentals charges $20 per day plus a $10 service charge to rent one of its compact cars. The total cost can be represented by the equation y = 20x + 10, where x is the number of days and y is the total cost.
Answer:
Step-by-step explanation:
Graph of the equation 20x + 10 is plotted and the total cost for 7 days is $150
What is Equation Modelling?Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.
Given is Ace Car Rentals that charges $20 per day plus a $10 service charge to rent one of its compact cars. The total cost can be represented by the equation y = 20x + 10, where [x] is the number of days and [y] is the total cost.
The graph of the equation 20x + 10 is plotted and attached. To find the total cost of renting the car for 7 days, find the y - coordinate corresponding to x = 7 on graph. See the graph [2]. We get the total cost of $150 for 7 days.
Therefore, graph of the equation 20x + 10 is plotted and the total cost for 7 days is $150
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[Refer to image 3 for complete question]
1 by 2 ÷ 7 by 12
pls answer fast
Answer:
not simplified:12/14
reduced/simplified:6/7
Step-by-step explanation:
1/2 ÷ 7/12 =1/2×12/7=
1×12
-- -- = 12/14
2×7
and if simplified then you just do
12÷2=6
----
14÷2=7
33 POINTS! Can someone please help me solve this?
Answer:
Step-by-step explanation:
i cant help sorry but it mite be 6
you own 16 cds. you want to randomly arrange 9 of them in a cd rack. what is the probability that the rack ends up in alphabetical order? the probability that the cds are in alphabetical order is
The probability that the rack ends up in alphabetical order is 1/9! or approximately 1.46 x 10⁻⁷.
The problem involves arranging 9 CDs out of 16 in alphabetical order in a CD rack. The total number of possible ways to arrange 9 CDs out of 16 is 16 choose 9, which equals 11440. Only one of these arrangements is in alphabetical order. Therefore, the probability of randomly selecting an alphabetical order is 1/11440, which is approximately 0.0000874 or 0.00874%. This is a very small probability, indicating that it is highly unlikely that the CDs will end up in alphabetical order by chance.
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Help bc this is due soon
The measures of angle B is derived as 75° to the nearest degree using the cosine rules.
What is the cosine rulesThe cosines rule relates the lengths of the sides of a triangle to the cosine of one of its angles.
Using the cosine rule:
2² = 5² + (√45)² - 2(5)(√45)cosB
4 = 25 + 45 - 250cosB
4 = 70 - 250cosB
250cosB = 70 - 4 {collect like terms}
250cosB = 66
B = cos⁻¹(66/250) {cross multiplication}
B = 74. 6925°
Therefore, the measures of angle B is derived as 75° to the nearest degree using the cosine rules.
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A recipe requires ¼ cup of oil for every ⅔ cup of water. How much oil (in cups) is needed per cup of water?
Answer:
3/8 cups
Step-by-step explanation:
Divide both sides by 2 to get the value for 1/3 cup of water:
1/3 cup water = 1/8 cup of oil
Now, multiply each side of the equation by 3 to get 1 cup of water:
1 cup water = 3/8 cup of oil
hope this helps!
what does y=x match?
Answer:
m = 1
Step-by-step explanation:
slope intercept form --> y=mx+b
y=1x+0
therefore the slope is
m = 1
Please please help I would give anything just please help and check if I’m right it’s algebra 2
Answer:
In no 4 you have written option B but it should be option C. All of the other except it is correct.
4) Every 10 years in April, the population of Boston is recorded. In 1990, Boston had a
population of 4,500 people. From 1990 to 2000, the population increased by 15%. From 2000
to 2010, the population decreased by 4%. That was Boston's population in 2010?
A
4,527
B
4,968
с
4,995
D
5,382
4500 increase it by 15%=675
4500+675=5175
Decrease 4% from 5175
4% of 5175=207
5175-207=4868
Answer=I think it’s b
mike is a good athlete.Mike's father is a good athlete.Mike's sister is a good athlete.Therefore,Mike's son will be a good athlete. (Inductive or Deductive?)
if an initial guess of three different colors is scored with two white key pegs, how many secret code remain
There would be 4 remaining secret codes.
If an initial guess of three different colors is scored with two white key pegs, it means that two of the guessed colors are correct but not in the correct positions.
To determine the number of secret codes that remain, we need to consider the remaining possibilities.
Let's assume there are six different colors available for the secret code.
For the two colors that are correctly guessed but not in the correct positions, there are two possible positions for each color.
So, we can calculate the number of remaining secret codes using the formula:
Remaining secret codes = (Number of colors - Correctly guessed colors)^(Number of positions - Correctly guessed positions)
In this case, the number of remaining secret codes would be:
Remaining secret codes = (6 - 2)⁽³⁻²⁾ = 4¹ = 4
The complete question is:
The Number of colors is 6 and If an initial guess of three different colors is scored with two white key pegs, how many secret code remain?
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Simplify the ratio.
14 ft to 21 ft
14 ft to 21 ft = 2 ft to 3 ft
Sophie has 5 pieces of string that are each 5 1/4 feet long. Cooper has 4 pieces of string that are each
3 7/8 feet long. Estimate how much more string Sophie has than Cooper has. Enter your answer in the box.
about how many feet?
-5b-17=18
plz help asap
what is the answer
and what does b stand for??!?
Answer:
b = -7
Step-by-step explanation:
b is a variable meaning it is an unknown value
In order to solve for b, isolate it by adding 17 to both sides:
-5b = 35
and then dividing both sides by -5
b = -7
Carly is making flags for her school's homecoming football game. Each flag requires 0.5 yards
of fabric, and Carly bought 25 yards of fabric.
Write an equation that shows how the number of yards remaining, y, depends on the number
of flags Carly has made, x.
Ver en e
The required equation can be given as
y = 25 - 0.5x
For the football game marking the school's homecoming, Carly is making flags. Every flag needs 0.5 yards.
Carly purchased 25 yards of fabric in total.
So, Each flag requires 0.5 yards of fabric, and Carly bought 25 yards of fabric.
Also given
The quantity of flags Carly has made, x, determines the number of yards that are left to be covered, y.
The required equation can be given as
y = 25 - 0.5x
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A university has three table tennis scholarships each worth $1000. How many ways are there to award these after they've narrowed
the candidates to 6 ping pong players?
Blank 1:
Answer:
1. In the presence of restrictions; A player cannot win more than one scholarship;
The number of ways is 120 ways
2. In the absence of restrictions; A player can win more than 1:
The number of ways is 216 ways
Step-by-step explanation:
Here, to award the scholarships, the restrictions we might have is that a student cannot win more than 1 scholarship
Given this restriction;
The first scholarship has 6 possible contenders
The second has 5
The third has 4
So, the number of possible ways is;
6 * 5 * 4 = 120 ways
In the absence of no restrictions where a student can win any number of scholarships;
We have the 3 scholarships being awarded in 6 possible ways
So the total number of ways will be;
6 * 6 * 6 = 216 ways