(Q1) Regarding point estimates and confidence interval estimates, which one of the following statements isFALSE?

A. For both estimates we assume that the observations are independent.

B. For both estimates we assume that the population distribution of the variable (X) is approximately Normal.

C. An indication of the error due to sampling is only provided for a confidence interval estimate.

D. For both estimates, a larger sample size means a more precise estimate

(Q2) Researchers are planning a study to estimate the proportion of students who use an iPad in lectures, rather than taking hand-written notes.

They would like their resulting estimate to have a margin of error of0.02 andthey require 95% confidence in their resulting estimate. Prior studies have shown that the proportion will be somewhere between 0.60 and 0.8. How many students should they sample? Which one of the following is the most appropriate advice to give to the researchers?

A. Take a sample of 2401 students at the absolute minimum!

B. Take a sample of 1537 students.

C. Take a sample of 1200 students.

D. Take a sample of 2305 students, if you want to achieve that level of confidence and that margin of error.