Question

Baseball caps are to be manufactured in one range of sizes for both men and women....

Baseball caps are to be manufactured in one range of sizes for both men and women. Let H be a random variable that measures the head circumference (around the head and right above the eyebrows) for a random individual. Hat manufacturers know that the head circumference for men follows a Gamma distribution with α = 2, β = 4, that the head circumference for women is also Gamma distributed with α = 2, β = 3, and among those who wear baseball caps there are three times as many men as women.

Part 5a: Part 5b: Part 5c:

What is the density function of H? What is the mean of H?

What is the variance of H?

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