er 7 Connect Homework Question 3 (of 6) value: 2.00 points Among U.S. cities wit

Question

er 7 Connect Homework Question 3 (of 6) value: 2.00 points 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 in New York City, where the mean time is 37.9 minutes Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 6.9 minutes. What percent of the New York City commutes are for less than 29 minutes? (Round the intermediate values to 2 declmal places. Round your answor to 2 decimal places.) a. Percent b. What percent are between 29 and 35 minutes? (Round the intermediate values to 2 decimal places Round your answer to 2 decimal places.) Percent What percent are between 29 and 42 minutes? (Round the intermediate values to 2 decimal places. Round your answer to 2 decimal places.) c. Percent References eBook & Resources Worksheet Difficulty: 2 intermediate calcu

Explanation / Answer

a)

b)

=0.2387 ~23.87%

c)

=0.6239 ~ 62.39%

for normal distribution z score =(X-)/ here mean=       = 37.9 std deviation   == 6.900

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