# A tire manufacturer wants to determine the inner diameter

## Problem 1.14 Chapter 1

Probability and Statistics for Engineering and the Sciences | 9th Edition

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Problem 1.14

A tire manufacturer wants to determine the inner diameter of a certain grade of tire. Ideally, the diameter would be 570 mm. The data are as follows:572,572,573,568,569,575,565,570.(a) Find the sample mean and median. (b) Find the sample variance, standard deviation, and range. (c) Using the calculated statistics in parts (a) and (b), can you comment on the quality of the tires?

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