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A trucking company determined that the distance traveled per truck per year is normallydistributed, with a mean of 7070 thousand miles and a standard deviation

A trucking company determined that the distance traveled per truck per year is normallydistributed, with a mean of 7070

thousand miles and a standard deviation of 1010thousand miles.

What proportion of trucks can be expected to travel between 58and 70thousand miles in ayear?

What percentage of trucks can be expected to travel either less than 45or more than 90 thousand miles in ayear

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