If you were constructing a 99 confidence interval of the pop

If you were constructing a 99% confidence interval of the population mean based on a sample of n=25 where the standard deviation of the sample s = 0 .05, will be Kristen Ashford purchased the subscribers list for Wind Surfing magazine She survey a sample of the subscribers before using the list in her mail order business randomly selects the fourth name as a starting point and then selects every 50th name (54, 104, 154, etc ). Her sample is a

Solution

14) Answer : a. 2.797

A 99% confidence interval critical value is same as that for a two-tailed hypothesis test.

You have n=25 so you have 24 degrees of freedom.

Using your t-chart find the line for df=24 and the column for 1% and 2-tailed:

t = 2.797

b) Answer : b. Stratified Sample