Researchers randomly select a married couple in which both spouses are employed. Let X be the income

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Researchers randomly select a married couple in which both spouses are employed. Let X be the income of the husband and Y be the income of the wife. Suppose that you know the means μX and μY and the variances σX² and σY² of both variables.

a. Can we calculate the mean of the total income X + Y to be μX + μY? Explain your answer.

b. Can we calculate the variance of the total income to be σX²+ σY²? Explain your answer.

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The Practice Of Statistics

ISBN: 9781319113339

6th Edition

Authors: Daren S. Starnes, Josh Tabor

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Question Posted: Aug 12, 2020 04:11 AM

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Researchers randomly select a married couple in which both spouses are employed. Let X be the income

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a No we cannot calculate the mean of the total income X Y to be X Y because we c...View the full answer

The Practice Of Statistics

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