Answered

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Given a sample size of 25, standard deviation of 2.9, and a sample average of 21.92, we could be confident that a population mean is between which of the following?

a. 20.93 and 22.91
b. 30 and 50
c. 20.72 and 23.12
d. 20.30 and 23.54

Sagot :

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