Question

Question 2 Based on the 1988 National Survey of Families and Households, it was re- ported that men spent a mean of 18.1 hours per week doing housework. Suppose the standard deviation was 13.1 hours a normal distribution, sketch the approximat a Assuming e distribution of the number of hours that a randomly selected man spent doing housework in 1988 b Based on the graph in part (a), explain why the population distribution is very unlikely to be normal and why is it most likely skewed t the right. c Assuming a normal distribution (even though it is unlikely), what propor- tion of men spent an average of 20 hours or more on housework each wee in 1988? d What proportion of men spent less than an average of 5 hours on housework each week in 1988? "You may use technology to calculate the probabilities in parts (c) and (d), but you must show what you've done to get your answer.

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