A floc farm labor organizing committee evaluation of 21


A United Nations report shows the mean family income for Mexican migrants to the United States is $26,700 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 21 Mexican family units reveals a mean to be $28,450 with a sample standard deviation of $10,850. Does this information disagree with the United Nations report? Apply the 0.01 significance level.

A sample of 47 observations is selected from a normal population. The sample mean is 30, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.05 significance level.

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