Clear Bags is an online company that sells a variety of protective bags for photo, art, and

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Clear Bags is an online company that sells a variety of protective bags for photo, art, and stationery products that are placed on display. Currently, its customer database consists of 872 individuals who place at least one order per year.

Clear Bags would like to estimate the proportion of their customer base that is 35 years or younger. From a random sample of 240 customers, 77 were found to be 35 years or younger.

a. Construct a 95% confidence interval to estimate the actual proportion of Clear Bags customers who are 35 years or younger.

b. What is the margin of error for this sample?

c. Verify your results with PHStat.

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Business Statistics

ISBN: 9780133852288

2nd Edition

Authors: Robert A Donnelly, Robert Donnelly Jr

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