In a study of 1000 two parent families, a researcher found mean height of the husbands was 68 inches with a standard deviation of 2.7 inches.The mean height of the wives was 63 inches with a standard deviation of 2.5 inches. Assume that the populations of husbands and wives both are normally distributed.
What % of the population of husbands has heights between 69 and 71 inches?
How many husbands have heights between 69 and 71 inches?
What % of the population of wives has heights between 59 and 64 inches?
What % of the population of wives has heights of 60 inches or less?
How many wives have heights equal to or below 60 inches?