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Question 53 is included because question 55 references it
53, Songs on an iPod Davids iPod has about 10.000 songs. The distribution of the play times for these song is heavily skewed to the right with a mean 225 seconds and a standard deviation of 60 seconds of Suppose we choose an SRS of 10 songs from this popu- lation and calculate the mean play time i of these songs
55. Songs on an iPod Refer to Exercise 53. How many songs would you need to sample if vou wanted the standard deviation of the sampling distribution of i to be 10 seconds? Justify your answer.
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