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8.1 Exercise 48

Avg difficulty 2.5

Construct a 95 percent confidence interval for the true mean age of winter Foothill College students by working out and then answering the next eight exercises.

Using the same mean, standard deviation, and sample size, how would the error bound change if the confidence level were reduced to 90 percent? Why?

OpenStax Statistics, 8.1 A Single Population Mean Using the Normal Distribution, exercise 48

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