AP Statistics Sampling

28% of all Woodrow students believe Monday will be snow day. You take a sample of 50 students and find that 15 of them believe Monday will be a snow day. What does 50 represent? 

• n

• P

• phat

• standard deviation

These symbols represent the mean and standard deviation for which of the following distributions?

• The Population

• The Sample

• The Sampling Distribution

The sampling distribution of a statistic is...

• Using repeated samples and finding a probabilitity

• The distribution of values taken by a statistic in all possible samples of the same sample size from the same population

• The way that sample results differe from each other

• the distribution of values in a sample of size n

28% of all Woodrow students believe Monday will be snow day. You take a sample of 50 students and find that 15 of them believe Monday will be a snow day. (The sample proportion is 15/50 or .3) What is the probability of getting a sample of size 50 that has 15 or more students who believe Monday will be a snow day?

• 0.376

• Cannot be determined because the distribution of the sample proportion of samples of size 50 is not normal

• 0.624

• 0.99999

What does this symbol represent?

• parameter

• sample proportion

• parameter of a population

• population proportion

53.2% of applicants are accepted into UConn. In a sample of 100 UConn applicants, 45 of them were accepted. What is the parameter?

• All UConn applicants.

• The 100 applicants in the sample.

• 53.2% acceptance rate.

• 45% of accepted in sample.

What does the symbol represent?

• mean from a sample

• proportion from a population

• standard deviation of the sampling distribution of sample proportions

• mean of the sampling distribution of sample proportions

• mean from a population

What does the symbol represent?

• proportion from a sample

• proportion from a population

• standard deviation of the sampling distribution of sample proportions

• mean of the sampling distribution of sample proportions

• standard deviation from a population

What does the symbol represent?

• n ot gonna answer this one

• sample size

• population size

• sampling distribution size

What does the symbol represent?

• proportion from a sample

• proportion from a population

• probability of something happening

• probably didn't learn this

• mean of the sampling distribution of sample proportions