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The mean of the commute time to work for a resident of a certain city is 28.828.8 minutes. Assume that the standard deviation of the commute time is 7.67.6 minutes to complete parts​ (a) through​ (c).
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Part 1
​(a) What minimum percentage of commuters in the city has a commute time within 2 standard deviations of the​ mean?
enter your response here​% ​(Type an integer or a​ decimal.)
Part 2
​(b) What minimum percentage of commuters in the city has a commute time within 1.51.5 standard deviations of the​ mean? What are the commute times within 1.51.5 standard deviations of the​ mean?
The minimum percentage of commuters in the city that has a commute time within 1.51.5 standard deviations of the mean is enter your response here​%. ​(Round to one decimal place as​ needed.)
Part 3
The commute times within 1.51.5 standard deviations of the mean are between enter your response here and enter your response here.
​(Type an integer or a decimal. Use ascending​ order.)
Part 4
​(c) What is the minimum percentage of commuters who have commute times between 66 minutes and 51.651.6 ​minutes?
enter your response here​% ​(Round to one decimal place as​ needed.)

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