# As part of a marketing study, Sleep n Dream wants to estimate, for customers who have recently

## Question:

As part of a marketing study, Sleep ’n’ Dream wants to estimate, for customers who have recently purchased a mattress and box spring, the average number of stores that customers visited before making their purchase. A sample of six customers is randomly selected, with the following results:

Use this sample data to construct a 90% confidence interval estimate of the average number of store visits for the population represented here. Assume that the population of values is approximately normal.

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**Related Book For**

## Understanding Business Statistics

**ISBN:** 978-1118145258

1st edition

**Authors:** Stacey Jones, Tim Bergquist, Ned Freed