Author Question: In which of the following situations can a confidence interval provide useful information for making ... (Read 74 times)

robinn137 · **on:** Jul 24, 2018

In which of the following situations can a confidence interval provide useful information for making a decision?
a. To assess whether or not at least 90 of a company's financial entries are correct.
b. To estimate the percentage of married couples in which the wife is taller than the husband.
c. To help determine whether or not someone has ESP (versus just being a lucky guesser).
d. All of the above.

Question 2

In which of the following situations can you construct a confidence interval for the population proportion with only what is given?
a. The sample proportion and the margin of error.
b. The sample proportion and the sample size.
c. The number of individuals in the sample with the trait of interest, and the total sample size.
d. All of the above.