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2.The weights of four randomly and independently selected bags of potatoes labeled 20 pounds were found...

2.The weights of four randomly and independently selected bags of potatoes labeled 20 pounds were found to be 21, 22​, ,20.4, and 21.2

Assume Normality.

a. Using a​ two-sided alternative​ hypothesis, should you be able to reject the hypothesis that the population mean is 20

pounds using a significance level of 0.05

Why or why​ not? The confidence interval is reported​ here: I am

95​%confident the population mean is between 20.1 and 22.2pounds.

b. Test the hypothesis that the population mean is not 20

Use a significance level of 0.05

c. Choose one of the following​ conclusions:

i. We cannot reject a population mean of 20 pounds.

ii. We can reject a population mean of 20 pounds.

iii. The population mean is 21.15 pounds.

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Expert Solution

milcah answered 1 year ago
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