Mathematics, 19.10.2019 01:30, Penguin1502

2. in a given population of two-earner male-female couples, male earnings have a mean of $40,000 per year and a standard deviation of $12,000. female earnings have a mean of $45,000 per year and a standard deviation of $18,000. the correlation between male and female earnings for a couple is 0.80. let c denote the combined earnings for a randomly selected couple. what is the mean of c?

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2. in a given population of two-earner male-female couples, male earnings have a mean of $40,000 per...