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Exam 6: Sampling and Sampling Distributions

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Question 31

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What is the major drawback of using the proportionate stratified sample?

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In a proportionate stratified sample,the...

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Question 32

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SELECT ALL THAT APPLY. -In a population of 250 students,60% are Whites,20% are Latinos,15% are Blacks,and 5% others.In a proportionate stratified random sample of 120,

A) the number of Whites selected is 72.
B) the number of Blacks selected is 50.
C) the number of Latinos selected is 37.
D) the number of other racial and ethnicity background selected is 6.

E) B) and C)
F) C) and D)

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Question 33

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0,3,6,9 is a sample of the population 1,2,3,4,5,6,7,8,9,10.

A small population of N = 12 has values of 2,2,3,4,4,7,8,8,8,9,12,12.Choose ten samples of size 3 and calculate the mean and standard deviation for each.

A small population of N = 12 has values of 2,2,3,4,4,7,8,8,8,9,12,12.Choose ten samples of size 3 and calculate the mean for each.Then calculate the mean of the ten sample means.What does the mean of the ten sample means approximate in this case?

SELECT ALL THAT APPLY. -The probability of rolling an even number with a six-sided,equally weighted die is

Will the standard error always be lower than the standard deviation? Why or why not?

A theoretical probability distribution of all possible sample values for the statistics in which we are interested in is referred to as a

SELECT ALL THAT APPLY. -The central limit theorem tells us that as the sample size gets larger,

According to the central limit theorem what happens to the sampling distribution of sample means as N becomes larger?