A major cab company in Chicago has computed its mean fare from O'Hare Airport to the Drake Hotel to be $. Based on this information, complete the following statements about the distribution of the company's fares from O'Hare Airport to the Drake Hotel.
a. According to Chebyshev's theorem, at least__?__ of the fare lies within 2 standard deviation of the mean, 25.58 dollars?
b. Suppose that the distribution is bell-shaped. If approximately 99.7 of the fairs lies between 12.26 dollars and 38.90 dollars, then the approximate value of the standard deviation fot the distribution, according to the empirical rule, is __?__
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