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?
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here