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Statistics / The Practice of Statistics 5 / Chapter 7.3 / Problem 49

The Practice of Statistics | 5th Edition | ISBN: 9781464108730 | Authors: Daren S. Starnes, Josh Tabor

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Songs on an iPod Davids iPod has about 10,000 songs. The distribution of the play times

Chapter 7, Problem 49

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QUESTION:

Songs on an iPod Davids iPod has about 10,000 songs. The distribution of the play times for these songs is heavily skewed to the right with a mean of 225 seconds and a standard deviation of 60 seconds. Suppose we choose an SRS of 10 songs from this population and calculate the mean play time x of these songs. What are the mean and the standard deviation of the sampling distribution of x ? Explain.

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QUESTION:

Songs on an iPod Davids iPod has about 10,000 songs. The distribution of the play times for these songs is heavily skewed to the right with a mean of 225 seconds and a standard deviation of 60 seconds. Suppose we choose an SRS of 10 songs from this population and calculate the mean play time x of these songs. What are the mean and the standard deviation of the sampling distribution of x ? Explain.

ANSWER:

Ste 1 of 2

Given

Number of songs on ipod:

The mean of play times:

Standard deviation of play times:

Number of songs chosen as SRS:

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