103 Answered Questions for the topic AP statistics

Ap Statistics

08/31/21

Analyze the scatterplot to explain the most likely transformation necessary to linearize the data. (2 points)
a The scatterplot resembles a power model, emulating a square root function with a downward curve. Squaring the y-values would linearize the data. b The scatterplot resembles an exponential... more
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Ap Statistics

08/31/21

The data set for the average height of men at a ballgame compared to their shoe size is represented by the table.
Part A: What is the equation of the least-squares regression line? Part B: Carlos wears a size 9 and is 71 inches tall. What is the residual for Carlos's data? Show your work. Part C: Interpret the... more
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Ap Statistics

08/31/21

The scatterplot for age in years and length of legs is shown.
Part A: Estimate and interpret the correlation coefficient. Part B: Create an influential point for this graph that would cause the correlation to decrease. Explain your reasoning.
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Ap Statistics Math Statistics Mathematics

08/28/21

Standard Normal Probabilities Table Question
When using a Standard Normal Probabilities Table, how do you know which number to choose from the top row (0.0, 0.1, 0.2, etc.)
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Ap Statistics Statistics

06/09/21

Margin of error & confidence interval of pop. Mean with large sample

how can I find the margin error & confidence interval for population mean with sample = 138, mean=64 abs standard deviation = 4 confidence level = 90%
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Ap Statistics Statistics Mathematics

05/29/21

AP Stats Questions Pls Help!
What is the value of χ2 for the two-way table?  A/ B/ C X 46 21 15 Y 25 32 29 Z 37 23 28 A, B, and C are supposed to be separate columns, sorry the table didn't come out... more
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Ap Statistics Statistics Mathematics

05/29/21

Ap Statistics Question pls Help ASAP!
Which of the statements are correct? (2 points) A condition for using the chi-square goodness-of-fit test is that all expected counts must be at least five. The chi-square goodness-of-fit test uses... more
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Ap Statistics

04/26/21

AP Stats question
Determine the appropriate inference method for each setting below.a) A biologist believes the offspring of certain gupples will have 25% red tails, 50% blue tails, and25% orange tails. She test her... more
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Ap Statistics Math Statistics

04/25/21

Which type of hypotheses test should be done?
I would like to test if players playing rock, paper, scissor choose between these three options randomly, or if certain options are favored above others. Which hypothesis test should be conducted... more
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Ap Statistics

04/25/21

Ap Statistics Question

Mrs. G reads an article in which the author claims 48% of mothers stay at home with their children. Mrs. G does not believe the author of the article, so she obtains a random sample of 200 mothers... more
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Ap Statistics

04/24/21

Ap Statistics Question
Mr. Sprocket is a frugal businessman who commissioned a manufacturing plant to produce gears for his latest venture. Mr. Sprocket wants the gears to have a diameter of 3.6 cm. However, Mr. Sprocket... more
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Ap Statistics Math Statistics

04/19/21

FInd upper and lower bound of 2 samples
The sample of 20 female servers worked an average of 25 hours per week, with a standard deviation of 3. A sample of 26 male servers worked an average of 35 hours per week, with a standard deviation... more
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Ap Statistics

04/11/21

Test for significance by using the confidence interval and hypothesis testing methods

An IQ test has a mean of 100 and standard deviation 10. A Group of 20 college students is given the IQ test and their mean score is 106. Is their evidence at the 05 level of significance that the... more
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Ap Statistics Math Statistics Sat Math

04/06/21

Tom, a holiday light inspector, has to check a shipment of multicolored Christmas lights. Suppose that the probability of a defective lightbulb is 30%.
a. Find the expected number of bulbs that Tom has to go through until he finds one that is defective.b. Find the probability that the first defective bulb that Tom finds is the 8th bulb.c. Find the... more
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Ap Statistics

03/30/21

Which of the following increases the power of a significance test? Increase α Increase the sample size Decrease the variability of the data
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Ap Statistics Statistics Mathematics

03/25/21

AP Stats Questions Pls Help!
Question 1:A new anxiety medication has been manufactured and a study is being conducted to determine whether its effectiveness depends on dose. When 40 milligrams of the medication was... more
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Ap Statistics

03/21/21

For the following pairs, indicate which do not comply with our rules for setting up hypotheses, and explain why. For those that don’t comply, change Ha to make it correct.
a. H0:𝜇= 15,Ha:𝜇=15b. H0:𝑝 =0.4,Ha:𝑝 >0.6c. H0: 𝜇 =123, Ha: 𝜇 < 123d. H0: 𝜇 =123, Ha: 𝜇 = 125e. H0:𝑝̂=0.1,Ha:𝑝̂=0.1
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Ap Statistics

03/21/21

Ap stat question

Explain why the statement 𝑥̅ = 50 is not a legitimate hypothesis.
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Ap Statistics

03/21/21

Ap Stat Question

A certain TV station has been providing live coverage of a particularly sensational criminal trial. The station’s program director wishes to know whether more than half the potential viewers prefer... more
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Ap Statistics Statistics

03/19/21

QUESTION IN DESCRIPTION *AP STATS
For some people, mistletoe is a symbol of romance. Mesquite trees, however, have no love for the parasitic plant that attaches itself and steals nutrients from the tree. To estimate the proportion... more
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Ap Statistics Statistics Mathematics

03/18/21

AP Statistics Questions Please Help!
Question 1: A hypothesis test is conducted with a significance level of 5%. The alternative hypothesis states that more than 12% of a population is left-handed. The p-value for the test is... more
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Ap Statistics Statistics Mathematics

03/14/21

AP Stats Questions Pls Help!
A program was created to randomly choose customers at a sporting goods store to receive a discount. The program claims 25% of the receipts will get a discount in the long run. The manager of the... more
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Ap Statistics Statistics Mathematics

03/14/21

Ap Stats Questions Pls Help!
Given a population mean of 41.8 with a standard deviation of 5.2 and a sample size of 9, answer these questions: (10 points)Part A: What is the standard deviation of the sampling distribution of... more
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Ap Statistics

03/11/21

What is the mean weight of both of the textbooks?

A math teacher and a history teacher each assign their students a textbook for class. A math textbook has an average weight of 8.00lbs with a standard deviation of 0.4lbs. A history textbook has an... more
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03/11/21

Ap Stats Question Pls Help
Two hundred randomly selected residents in Hoptown were surveyed and asked, "Do you support the city's decision to build a public health clinic in your area?" A total of 108 said no, 8 said yes,... more
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