Business, 04.04.2021 01:30, Ezekielcassese

A trucking company determined that the distance traveled per truck per year is normally distributed, with a mean of thousand miles and a standard deviation of thousand miles. Complete parts (a) through (d) below. a. What proportion of trucks can be expected to travel between and thousand miles in a year?
The proportion of trucks that can be expected to travel between and thousand miles in a year is
0.5000.
(Round to four decimal places as needed.)
b. What percentage of trucks can be expected to travel either less than or more than thousand miles in a year?
The percentage of trucks that can be expected to travel either less than or more than thousand miles in a year is
34.89%.
(Round to two decimal places as needed.)
c. How many miles will be traveled by at least % of the trucks?
The number of miles that will be traveled by at least % of the trucks is
nothing miles.
(Round to the nearest mile as needed.)
d. What are your answers to parts (a) through (c) if the standard deviation is thousand miles?
If the standard deviation is thousand miles, the proportion of trucks that can be expected to travel between and thousand miles in a year is
nothing.
(Round to four decimal places as needed.)
If the standard deviation is thousand miles, the percentage of trucks that can be expected to travel either less than or more than thousand miles in a year is
nothing%.
(Round to two decimal places as needed.)
If the standard deviation is thousand miles, the number of miles that will be traveled by at least % of the trucks is
nothing miles.
(Round to the nearest mile as needed.)

Answers: 2

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A trucking company determined that the distance traveled per truck per year is normally distributed...