suzanne surveyed the prices for a quart of a certain brand of motor oil. The sample data, in dollars per quart, are summarized in Figure 4.161. a. Find the mean and standard deviation of the prices....


suzanne surveyed the prices for a quart of a certain brand of motor oil. The sample data, in dollars per quart, are summarized in Figure 4.161.


a. Find the mean and standard deviation of the prices.


b. What percent of the data lies within one standard deviation of the mean?


c. What percent of the data lies within two standard deviations of the mean?


d. What percent of the data lies within three standard deviations of the mean?



May 08, 2022
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