Suppose that a women's clothing store wishes to sell dresses of just one size that will fit the average woman. From a scientific study, the company finds that the population standard deviation is two...

Extracted text: Suppose that a women's clothing store wishes to sell dresses of just one size that will fit the average woman. From a scientific study, the company finds that the population standard deviation is two sizes (in number sizes). Assuming that dress size is normally distributed, construct a 95% confidence interval for the population mean when the company takes a sample of 2500 customers and finds the average dress size is 8.5 with a standard deviation of 1.50 sizes. Select one: a. 8.5 ± (1.96)(2/50) • b. 8.5 + (1.96)(2/1.5) O c. 8.5 + (1.96)(2/2500) d. 8.5 + (1.96)(1.5/50)