Question

QUESTION 24 Answer the following 2 questions using the information below. Researchers want to know if students working part-time jobs are working too much, therefore, spending less time on their classes than they should be. First, the researchers need to find out how many hours a week students are working on average. From previous studies, the standard deviation of this variable is about 3.2 hours. They know from previous studies that the standard deviation of this variable is about 5 hours. Suppose that this confidence interval was (6.82, 7.38). The researchers are not satisfied with their confidence interval and want to do another study to find a wider confidence interval. What should they change to ensure they find a wider confidence interval? They should increase their confidence level but decrease their sample size. They should increase their confidence level and increase their sample size. They should decrease their confidence level but increase their sample size. They should decrease their confidence level and decrease their sample size. None of the other options QUESTION 25 Suppose our p-value is 1003. What will our conclusion be at alpha levels of 10,05, and .01? We will reject H, at a=.10, but not at a = .05 We will reject Ho at a = .10 or 05, but not at a = .01 We will reject Ho at a=.10,05, or .01 We will not reject Ho at a=.10,05, or 01 Not enough information provided.

Answer 1

24)

They should increase the confidence level but decrease the sample size

25)

p value = 0.1003

as p value > 0.10 , 0.05 , 0.01 , fail to reject H0

We will not reject Ho at 0.10 , 0.05 or 0.01