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

7.2 Exercise 9

Avg difficulty 2.5

Use the following information to answer the next four exercises: An unknown distribution has a mean of 80 and a standard deviation of 12. A sample size of 95 is drawn randomly from the population.

Find the sum that is two standard deviations above the mean of the sums.

OpenStax Statistics, 7.2 The Central Limit Theorem for Sums (Optional), exercise 9

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Adapted from Statistics © 2022 Rice University. Licensed under CC BY 4.0. Source: Statistics. Imported at revision 7dea80a.