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Percentage of trucks can be expected to travel

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A trucking company determined that the distance traveled per truck per year is normally distributed, with a mean of 50 thousand miles and a standard deviation of 10 thousand miles. 

 

1. What proportion of trucks can be expected to travel between 58 and 70 thousand miles in a year?

2. What percentage of trucks can be expected to travel either less than 45 or more than 90 thousand miles in a year

Reference no: EM13944227

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