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# Assume that all variable are approximately | Ch 7.2 - 17E

ISBN: 9780073534985 75

## Solution for problem 17E Chapter 7.2

Elementary Statistics: A Step By Step Approach | 9th Edition

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Problem 17E

Assume that all variable are approximately normally distributed.

Costs for a 30-Second Spot on Cable Television The approximate costs for a 30-second spot for various cable networks in a random selection of cities are shown below. Estimate the true population mean cost for a 30- second advertisement on cable network with 90% confidence. 32.0<μ<71. Assumenormal distribution.

 14 55 165 9 15 66 23 30 150 22 12 13 54 73 55 41 78

Source: www.spotrunner.com

Step-by-Step Solution:

Solution:

Step 1 of 2:

The given data is

 X 14 55 165 9 15 66 23 30 150 22 12 13 54 73 55 41 78 = 875

We have to estimate the true population mean cost of a 30- second advertisement on cable network with 90% confidence.

Step 2 of 2

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