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27. A. In a certain sample of workers, the correlation between years of education and income...

27. A. In a certain sample of workers, the correlation between years of education and income earned is .60. The sample standard deviation in years of education is Sx = 2.1 years and the sample standard deviation in income is Sy = 23,000 dollars. The average income is 45000 dollars and the average years of education is 4. What is the regression equation for predicting income from education?

. BFind the T value for a sample of 25 individuals who have a sample mean of x̅ = 34, sample standard deviation of Sx = 4 relative to a population with a mean of μ = 38. Is this sample significantly different (using a 2 tailed test with alpha set at .05) from the sample with a mean of μ = 38?

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