distance traveled per truck per year is normally​ distributed, with a mean of 60 thousand miles and a standard deviation of 11 thousand miles. Complete parts​ (a) through​ (d) below.  What percentage of trucks can be expected to travel either less than  45  or more than  80  thousand miles in a year? What percentage of trucks can be expected to travel either less than  45  or more than  80  thousand miles in a year?

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 trucking company determined that the distance traveled per truck per year is normally​ distributed, with a mean of

60

thousand miles and a standard deviation of

11

thousand miles. Complete parts​ (a) through​ (d) below.

 What percentage of trucks can be expected to travel either less than 
45 
or more than 
80 
thousand miles in a year?
What percentage of trucks can be expected to travel either less than 
45 
or more than 
80 
thousand miles in a year?

Expert Solution
Step 1

Let X be the random variable from normal distribution with mean (μ) = 60 and standard deviation (σ) = 11

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