population fall between 45 and 65 miles per hour? O a. 68% O b. Cannot be determined from the given information. O C. Nearly all. O d. 95%

MATLAB: An Introduction with Applications
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A police radar gun is used to measure the speed of cars on a highway. The speeds are Normally distributed with a mean of 55 miles per hour and a standard deviation of 5 miles per hour. What percentage of all speeds in this
population fall between 45 and 65 miles per hour?
O a. 68%
O b. Cannot be determined from the given information.
O c. Nearly all.
O d. 95%
Transcribed Image Text:A police radar gun is used to measure the speed of cars on a highway. The speeds are Normally distributed with a mean of 55 miles per hour and a standard deviation of 5 miles per hour. What percentage of all speeds in this population fall between 45 and 65 miles per hour? O a. 68% O b. Cannot be determined from the given information. O c. Nearly all. O d. 95%
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