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Back to 7.2 The Central Limit Theorem for Sums (Optional)

7.2 Exercise 29

Avg difficulty 2.5


Use the following information to answer the next four exercises: An unknown distribution has a mean 12 and a standard deviation of one. A sample size of 25 is taken. Let X = the object of interest.

An unknown distribution has a mean of 25 and a standard deviation of six. Let X = one object from this distribution. What is the sample size if the standard deviation of ΣX is 42?

OpenStax Statistics, 7.2 The Central Limit Theorem for Sums (Optional), exercise 29

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