A Sociologist Recently Conducted a Survey of Citizens Over 60 $\begin{array} { l l l l l l l l l l l l l } 68 & 73 & 66 & 76 & 86 & 74 & 61 & 89 & 65 & 90 & 69 & 92 & 76 \end{array}$

A sociologist recently conducted a survey of citizens over 60 years of age who have net worths too high to qualify for Medicaid but have no private health insurance. The ages of the 25 uninsured
Senior citizens were as follows: $\begin{array} { l l l l l l l l l l l l l } 68 & 73 & 66 & 76 & 86 & 74 & 61 & 89 & 65 & 90 & 69 & 92 & 76 \end{array}$
$\begin{array} { l l l l l l l l l l l l } 62 & 81 & 63 & 68 & 81 & 70 & 73 & 60 & 87 & 75 & 64 & 82 \end{array}$ Suppose the mean and standard deviation are 74.04 and 9.75, respectively. If we assume that the
Distribution of ages is mound-shaped and symmetric, what percentage of the respondents will be
Between 64.29 and 93.54 years old?

A) approximately 95%
B) approximately 84%
C) approximately 68%
D) approximately 81.5%