For a sample of 145 observations from a population of 744,the sample mean is 22.6 and the sample standard deviation is 3.8.Create a 90% confidence interval for the population mean.
A)22.6 ± 0.113
B)22.6 ± 1.328
C)22.6 ± 0.894
D)22.6 ± 0.466

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The Answer of For a sample of 145 observations from a population of 744,the sample mean is 22.6 and the sample standard deviation is 3.8.Create a 90% confidence interval for the population mean.
A)22.6 ± 0.113
B)22.6 ± 1.328
C)22.6 ± 0.894
D)22.6 ± 0.466

For a Sample of 145 Observations from a Population of 744,the