AP Statistics 2017

group of males. To simplify the example, suppose that we were only testing one level (say 500 mg) of ...

environment in which the experiment was conducted. The randomization controlled for unknown influences that might ...

is the poll likely to find? Answer : The poll is likely to find that, overwhelmingly, respondents think th ...

(b) II only (c) III only (d) I and III only (e) I and II only You want to d ...

Which of the following is not an example of a probability sample ? (a) You are going to sample ...

You are interested in the extent to which ingesting vitamin C inhibits getting a cold. You identify ...

those that didn’t use vitamin C. Question #8 asked you about possible confounding variables in this study. ...

strawberries to test. Faced with the same physical conditions you had in problem 14, and given that you are ...

(a) is based on the median? (b) is based on the mean? For the dataset of problem #3 above, ...

besides random variation may have accounted for the difference. Identify 300 volunteers for the study, p ...

The study suffers from undercoverage of the population of interest, which was declared to be all s ...

about, and you randomize to control for the effect of those you don’t know about. In this case, then, you ra ...

group sizes might be quite unequal (a TI-83/84 simulation of this produced 4 1s, 11 2s, 4 3s, and 7 4s ...

CHAPTER 8 Design of a Study: Sampling, Surveys, and Experiments Medical researchers are conducting a study ...

sampling if stratifying is done on a variable that is associated with the variable of interest. (E) ...

CHAPTER 9 Probability and Random Variables IN THIS CHAPTER Summary: We’ve completed the basics of data analysis, ...

make statements such as, “If we assume the null hypothesis to be true then the probability of getting resu ...

sample space contains four elements ({HH, HT, TH, TT}). s = 3 because there are three ways for our outcome ...

There are nine ways in which a sum has one die showing a 3 and has a sum greater than 4: [(3, 2), (3, ...

count the “10” twice). Of those, two are 7s. Thus, the P (the sum is 7|one die shows a 5) = 2/11. alternat ...