Sandra B.

asked • 04/20/21

A random sample of size 975 is drawn from a large population. The population standard deviation is 18.

A random sample of size 975 is drawn from a large population. The population standard deviation is 18. The sample mean is 69.2. Find a 99% confidence interval for the population mean, 𝜇.

(a) 66.7 < 𝜇 < 71.7

(b) 67.7 < 𝜇 < 70.1

(c) 67.7 < 𝜇 < 70.7


1 Expert Answer

By:

Glendida C. answered • 04/21/21

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