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

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Basic Math

2.The weights of four randomly and independently selected bagsof potatoes labeled 20 pounds were found to be 21, 22?, ,20.4, and21.2

Assume Normality.

a. Using a? two-sided alternative? hypothesis, should you beable 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: Iam

95?%confident the population mean is between 20.1 and22.2pounds.

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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