Question 4 of 40 Based on the NYC Department of Health Community Health Survey i

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Question 4 of 40 Based on the NYC Department of Health Community Health Survey in 2010 a 95% confidence interval for the proportion of New Yorkers who were tested for HIV in the past 12 months is (29.9%, 32.9% If the population size is 6 million in 2010 with 95% confidence, we know that at east how many New Yorkers were tested for HIV within the past 12 months? A. 1.97 million B. 1.79 million C.1.90 million D. 2 million Beset Selection Question 5 of 40 If we draw two samples from the same population, one has sample size 1000, the other one has sample size 10, then we expect A. the standard error of the mean for the large sample to be smalier than that of the small sample. B. the standard error of the mean for the large sample to be greater than that of the small samplo. C. the standard error of the mean for the large sample to be the same than thaf of the small sample. D. can not answer since we don't know the variance.

Explanation / Answer

Ans 4)B

0.299*6000000 = 1.79 million

Ans5 )

A .As you increase your sample size, the standard error of the mean will become smaller

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