Suppose that the number of Facebook friends users have is normally distributed with a mean of 128 and a standard deviation of about 48. Assume forty-one individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible.For part b), is the assumption that the distribution is normal necessary? NoYes

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Asked Nov 15, 2019
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Suppose that the number of Facebook friends users have is normally distributed with a mean of 128 and a standard deviation of about 48. Assume forty-one individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible.

For part b), is the assumption that the distribution is normal necessary? NoYes

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Expert Answer

Step 1

(b)

The conditions for the t-distribution is appropriate as given below:

  • If the sample size is larger (n>30) or the distribution follows normal, then the t-dist...

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