In a random sample of 341 U.S.companies, the average number of paid sick days allowed company employees was 18.65.The margin of error was reported as 1 day, at the 95% confidence level.Show the upper bound for the 95% confidence interval estimate of the average number of paid sick days allowed employees by the population of all U.S.companies.
A)18.76
B)20.34
C)19.65
D)18.08
E)19.13

Question

Quizplus · Accepted Answer

The upper bound for the 95% confidence interval is calculated by adding the margin of error to the sample mean. Therefore, 18.65 + 1 = 19.65.

In a Random Sample of 341 U