The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric, unimodal, and bell-shaped, with a mean of 184.8 mph and a standard deviation of 7.2 mph. ( a ) lines at the...

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Extracted text: The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric, unimodal, and bell-shaped, with a mean of 184.8 mph and a standard deviation of 7.2 mph. ( a ) lines at the mean and each whole number standard deviation above and below the mean. In the space above, draw a Normal Curve, from z=-3 to z=+3. Draw vertical Write two rows of numbers under the base line; one row with the number of standard deviations above and below the mean (z-scores), and a row under that with the actual values for this problem. (b ) Show all work. What percent of drivers would you expect to have speeds below 199.2 mph ?