AP Statistics: Sampling Distributions Practice Test
AP Statistics: Sampling Distributions Practice Test
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Question 1 of 19
1. Question
Let us suppose we have population data where the data are distributed Poisson. Which distribution increasingly approximates the sample mean as the sample size increases to infinity?
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Question 2 of 19
2. Question
A researcher wants to determine whether there is a significant linear relationship between time spent meditating and time spent studying. What is the appropriate null hypothesis for this study?
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Question 3 of 19
3. Question
What is the standard deviation of each (and every) sample mean?
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Question 4 of 19
4. Question
The purpose of the t test is to do which of the following?
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Question 5 of 19
5. Question
Y follows a chisquared distribution with 6 degrees of freedom and X 1 through X n are independent standard normal variables.
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Question 6 of 19
6. Question
The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25. What is the mean of the sampling distribution?
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Question 7 of 19
7. Question
A statistic is an unbiased estimator of a parameter when…
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Question 8 of 19
8. Question
These symbols represent the mean and standard deviation for which of the following distributions?
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Question 9 of 19
9. Question
These symbols represent the mean and standard deviation for which of the following distributions?
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Question 10 of 19
10. Question
In the game of Scrabble, each player begins by drawing 7 tiles from a bag containing 100 tiles. There are 42 vowel, 56 consonants, and 2 blank tiles in the bag. Cait chooses an SRS of 7 tiles. Let phat be the proportion of vowels in her sample. Is the 10% condition met in this case?
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Question 11 of 19
11. Question
The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let phat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true. What is the mean of the sampling distribution of phat?
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Question 12 of 19
12. Question
The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let phat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true. Calculate the standard deviation of the sampling distribution. (Check to see if the 10% condition is met first)
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Question 13 of 19
13. Question
At a particular college, 78% of all students are receiving some kind of financial aid. The school newspaper selects a random sample of 100 students and 72% of the respondents say they are receiving some sort of financial aid. Which of the following is true?
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Question 14 of 19
14. Question
Why do we randomly select our samples?
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Question 15 of 19
15. Question
The population describes…
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Question 16 of 19
16. Question
What does this symbol represent?
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Question 17 of 19
17. Question
The sampling distribution of a statistic is…
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Question 18 of 19
18. Question
If you had to choose a “best statistic” to describe a population, which of the following would be best?
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Question 19 of 19
19. Question
A statistic is biased if…
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