42. The following TI-84 Plus display presents some sample statistics.
x=79
Ex-2291
1-Var Stats
Ex-182361
Sx-7
ox 6.878251582
n=29
minX-69
401-72
a. Assume that a histogram of the sample is bell-shaped. Approximately what percentage of the sample values are between 72 and 86?
b. Assume that a histogram for the sample is bell-shaped. Between what two values will approximately 95% of the sample be?
c. If we do not assume that the histogram is bell-shaped, at least what percentage of the sample values will be between 65 and 93