Question: Do husbands do their share? An opinion poll interviewed a random sample of 1025 married women. Th e women were asked whether their husbands did

Do husbands do their share? An opinion poll interviewed a random sample of 1025 married women. Th e women were asked whether their husbands did their fair share of household chores. Here are the results: Outcome Does more than his fair share Does his fair share Does

Th ese proportions are probabilities for the random phenomenon of choosing a married woman at random and asking her opinion.

(a) What must be the probability that the woman chosen says that her husband does less than his fair share? Why?

(b) What is the probability of the event “I think my husband does at least his fair share”?

Outcome Does more than his fair share Does his fair share Does less than his fair share Probability 0.12 0.61 ?

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