Question: The manager of a newly opened Target store wants to

The manager of a newly opened Target store wants to estimate the average expenditure of his customers. From a preselected sample, the standard deviation was determined to be $18. The manager would like to construct the 95% confidence interval for the mean customer expenditure.
a. Find the appropriate sample size necessary to achieve a margin of error of $5.
b. Find the appropriate sample size necessary to achieve a margin of error of $3.



$1.99
Sales1
Views81
Comments
  • CreatedJanuary 28, 2015
  • Files Included
Post your question
5000