# You measure 30 textbooks' weights, and find they have a mean weight of 72 ounces. Assume the population standard deviation

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## Question:

You measure 30 textbooks' weights, and find they have a mean weight of 72 ounces. Assume the population standard deviation is 4 ounces.

** Based on this, construct a 90% confidence interval for the true population mean textbook weight**. Give the answers as decimals, to two places

**Related Book For**

## Essentials Of Business Statistics Communicating With Numbers

ISBN: 9780078020544

1st Edition

Authors: Sanjiv Jaggia, Alison Kelly

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