FlyHigh Airlines determined that the distance travelled per aircraft per year is normally distributed, with a mean of 60 thousand miles and a variance of 100 thousand miles. a) What proportion of aircrafts can be expected to travel between 44 and 54 thousand miles in a year? b) What percentage of aircrafts can be expected to travel either less than 25 or more than 70 thousand miles in a year? c) How many miles will be travelled by at least 70 percent of the aircrafts? d) What is the proportion of aircraft that travelled at least 50 thousand miles?
FlyHigh Airlines determined that the distance travelled per aircraft per year is normally distributed, with a mean of 60 thousand miles and a variance of 100 thousand miles. a) What proportion of aircrafts can be expected to travel between 44 and 54 thousand miles in a year? b) What percentage of aircrafts can be expected to travel either less than 25 or more than 70 thousand miles in a year? c) How many miles will be travelled by at least 70 percent of the aircrafts? d) What is the proportion of aircraft that travelled at least 50 thousand miles?
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Author:Amos Gilat
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
Transcribed Image Text:Assignment 4
FlyHigh Airlines determined that the distance travelled per aircraft per year is normally
distributed, with a mean of 60 thousand miles and a variance of 100 thousand miles.
a) What proportion of aircrafts can be expected to travel between 44 and 54 thousand
miles in a year?
b) What percentage of aircrafts can be expected to travel either less than 25 or more than
70 thousand miles in a year?
c) How many miles will be travelled by at least 70 percent of the aircrafts?
d) What is the proportion of aircraft that travelled at least 50 thousand miles?
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