A truck company decides that every year, the distance traveled for the truck usually distributed normally with average traveled 50.0 thousands miles and the standart deviation os 12.0 thousands miles Question a. What is the proportion of trucks that travel between 34 and 50,000 miles per year b.What is the probability that a randomly selected trucks traveled between 34.0 and 38.0 thousand in that year. c.What percentage of trucks can travel under 38.0 or over 60.0 thousand miles in a number of years
A truck company decides that every year, the distance traveled for the truck usually distributed normally with average traveled 50.0 thousands miles and the standart deviation os 12.0 thousands miles
Question
a. What is the proportion of trucks that travel between 34 and 50,000 miles per year
b.What is the probability that a randomly selected trucks traveled between 34.0 and 38.0 thousand in that year.
c.What percentage of trucks can travel under 38.0 or over 60.0 thousand miles in a number of years
d.How many of the 1,000 trucks in the fleet are expected to cover between 30.0 and 60.0 thousand miles this year
e.How many miles will at least 80% of the trucks travel
d.What is your answer to (1) - (4) if the standard deviation is 10 thousand miles
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