Rich retirement
Healthcare issues are receiving much attention in both academic and political arenas. A sociologist recently surveyed citizens over 60 years of age whose net worth is too high to qualify for government health care but who have no private health insurance. The ages of 25 uninsured senior citizens were as follows: Suppose the mean and standard deviation are 74.0 and 9.7, respectively. If we assume that the distribution of ages is bell-shaped, what percentage of the respondents will be between 64.3 and 93.4 years old?
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Dr Math
See normal distribution calculator:
https://www.hackmath.net/en/calculator/normal-distribution?mean=74&sd=9.7&above=0.0767&below=&area=between&ll=64.3&ul=93.4&outsideLL=&outsideUL=&draw=Calculate
or use z score and table lookup
https://www.hackmath.net/en/calculator/normal-distribution?mean=74&sd=9.7&above=0.0767&below=&area=between&ll=64.3&ul=93.4&outsideLL=&outsideUL=&draw=Calculate
or use z score and table lookup
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