Question

A research company desires to know the mean consumption of meat per week among people over age 29. They believe that the meat consumption has a mean of 2.6 pounds, and want to construct a 95% confidence interval with a maximum error of 0.06 pounds. Assuming a variance of 1.96 pounds, what is the minimum number of people over age 29 they must include in their sample? Round your answer up to the next integer.

Answer 1

We have given here,              
              
Population standard deviation =   1.4
Margin of error =E=0.06
Level of significance =   0.05
Z critical value is (by using Z table)=1.96

Sample size formula is

=2091.46