The scatter diagram on the next page shows incomes for a sample of 168 working couples in
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The scatter diagram on the next page shows incomes for a sample of 168 working couples in Louisiana. Summary statistics are as follows:
average husband's income = $45,000, SD = $25,000 average wife's income = $28,000, SD = $20,000
(a) If you predict wife's income as $28,000, ignoring husband's income, your r.m.s. error will be ___. pl875
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