AP Stats Unit 5 MCQ B Exam Questions And Answers.docx

AP Stats Unit 5 MCQ B Exam Questions
And Answers
In a certain region of the country, the proportion of the population
with blue eyes is currently 17 percent. A random sample of 100
people will be selected from the population. What is the mean of
the sampling distribution of the sample proportion of people with
blue eyes for samples of size 100?


A.)0.04
B.)0.17
C.)0.83
D.)3.76
E.)17.0 -
correct answer B.)0.17


At a national convention attended by many educators, about 30
percent of the attendees are from the northeast. Of all the
attendees of the national convention, 25 will be selected at random
to receive a free book. What are the mean and standard deviation
of the sampling distribution of the proportion of attendees from
the northeast for samples of size 25?


A.) The mean is 30 and the standard deviation is √30(70)/25.

, AP Stats Unit 5 MCQ B Exam Questions
And Answers
B.) The mean is 30 and the standard deviation is √25(5)/30.
C.) The mean is 0.3 and the standard deviation is √0.3(0.7)/25.
D.) The mean is 0.03 and the standard deviation is √0.03(0.97)/25.
E.) The mean is 7.5 and the standard deviation is √7.5(17.5)/25 -
correct answer C.) The mean is 0.3 and the standard deviation is
√0.3(0.7)/25.


A sample of manufactured items will be selected from a large
population in which 8 percent of the items are defective. Of the
following, which is the least value for a sample size that will allow
for the sampling distribution of the sample proportion to be
assumed approximately normal?


A.) 11
B.) 30
C.) 100
D.) 125
E.) 250 -
correct answer D.) 125