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Answer to Question #24975 in Statistics and Probability for bradley

Question #24975
Among U.S. cities with a population of more than 250,000, the mean one-way commute time to work is 24.3 minutes. The longest one-way travel time is New York City, where the mean time is 38.3 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 7.5 minutes.

(a)
What percent of the New York City commutes are for less than 30 minutes? (Round the intermediate values to 2 decimal places. Round your answer to 2 decimal places. Omit the "%" sign in your response.)

Percent %

(b)
What percent are between 30 and 35 minutes? (Round the intermediate values to 2 decimal places. Round your answer to 2 decimal places. Omit the "%" sign in your response.)

Percent %

(c)
What percent are between 30 and 40 minutes? (Round the intermediate values to 2 decimal places. Round your answer to 2 decimal places. Omit the "%" sign in your response.)
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