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Hypothesis Test for a Sample Mean

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The mean wages paid to Americans between the ages of 45 and 64 across all demographics in the United States is $38,740 with a standard deviation of $156. We took a sample of 31 workers between the ages of 45 and 64. They had a mean earned wages of $33,298. At the 0.05 significance level can we conclude does the sample show that the population mean is accurate?

Ho: µ = $38,740
H1: µ ≠ $38,740

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Hypothesis tests for a sample mean for American wages is given.

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The mean wages paid to Americans between the ages of 45 and 64 across all demographics in the United States is $38,740 with a standard deviation of $156. We took a sample of 31 workers between the ages of 45 and 64. They had a mean earned wages of $33,298. At ...

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