AP Stats Review

A student who is 65 inches tall would have a z-score of -1.6. Which of the following correctly interpets this z-score?

In which of the following situations could we assume the sampling distribution of the statistic is approximately normal?

What sampling method is made up of people who decide for themselves if they want to be in the survey?

If the mean of a distribution is much larger then the median, which of the following is most likely true?

If events A and B are independent and the P(A) = 0.35 and P(B) = 0.50, what is the P(A or B)?

Which of the following would be the best description of the shape of the distribution shown below?

Which of the following statistics tells us the percent of variation in the y values that is explained by the LSRL on x?

Which of the following would increase the power of a significance test?

Ho: p = 0.50 vs Ha: p < 0.50. A sample of 40 has a p-hat = 0.45. The p-value is 0.07. Interpret this p-value.

If events A and B are independent and the P(A) = 0.35 and P(B) = 0.50, what is the P(A and B)?

Type of sampling divides to pop. up into groups based on some characteristic, then takes a random sample of each group.

When blocking in an experiment, each block should contain:

Observational Studies cannot show cause and effect because...

What inference procedure can be used to see if a useful linear relationship exists between a persons height and weight?

What would be the critical value for a 95% CI for a population mean based on a sample size of 8 be?

Why is replication in an experiment important?

A test trying to find evidence that the mean is less than 16 has a t-statistic = -1.2 based on n=12. Find the p-value?

If each shot is independent, what is the probability that a 50% free throw shooter makes more than 7/10 free throws?

In an experiment the concept of replication refers to:

What inference procedure would you use to see if the mean GPA at Bay High is higher than the mean GAP at Westlake?

The distribution of heights are N(68, 2.2). Let X = height of randomly selected person. What is P(70 < X < 73)?

A population is N(50, 10). What is the probability that a random sample of 20 would have a sample mean above 55?

Why is it important to randomly assign treatments to subjects in an experiment?

Ho: p = 0.25, Ha: p < 0.25: if the true value of p is 0.22, identify the which of the following is an error and type?

What inference procedure would we use to see if Jolly Rancher flavors are distributed evenly?

The heights of a population are N(69, 2.5). What height would be at the 80th percentile?

Extrapolation refers to:

For a 50% free throw shooter, what probability it takes them more than 4 shots to make one?

The P(A) = 0.40, P(B) = 0.70, P(A and B) = .30. What is P(A|B)?

When a sampling method systematically favors certain outcomes over others it is called: