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A sociologist recently conducted a survey of citizens over 60 years of age who have net worth too high to qualify for Medicaid but have no private...
A sociologist recently conducted a survey of citizens over 60 years of age who have net worth too high to qualify for Medicaid but have no private health insurance. The ages of the 25 uninsured senior citizens were as follows:
68 73 66 76 86 74 61 89 65 90 69 92 76
62 81 63 68 81 70 73 60 87 75 64 82
Suppose the mean and standard deviation are 74.04 and 9.75, respectively. If we assume that the distribution of the ages of all such citizens is mound-shaped and symmetric, use the 68-95-99.7 rule to approximate the percentage who are between 64.29 and 93.54 years old?
approximately 81.5%
approximately 84%
approximately 68%
approximately 95%
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