(Show your solutions) The average life of a bread making machine is 7 years, with a standard deviation of 1 year. Assuming that the lives of these machines follow approximately a normal distribution, find а. the probability that the mean life of a random sample of 9 such machines falls between 6.4 and 7.2 years b. The value of x to the right of which 15% of the means computed from random samples size 9 would fall. (upload the picture of solution and roundoff your final answer into 5 decimal places)
(Show your solutions) The average life of a bread making machine is 7 years, with a standard deviation of 1 year. Assuming that the lives of these machines follow approximately a normal distribution, find а. the probability that the mean life of a random sample of 9 such machines falls between 6.4 and 7.2 years b. The value of x to the right of which 15% of the means computed from random samples size 9 would fall. (upload the picture of solution and roundoff your final answer into 5 decimal places)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![(Show your solutions)
The average life of a bread making machine is 7
years, with a standard deviation of 1 year. Assuming
that the lives of these machines follow
approximately a normal distribution, find
the probability that the mean life of a
а.
random sample of 9 such machines falls between
6.4 and 7.2 years
b.
The value of x to the right of which 15% of
the means computed from random samples size 9
would fall.
(upload the picture of solution and roundoff
your final answer into 5 decimal places)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb9fdfc6-c561-4f5e-80c8-f39fa0eef47c%2F85331a4f-74a8-4c7a-b743-98e7f240ae3d%2F9tfcri_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(Show your solutions)
The average life of a bread making machine is 7
years, with a standard deviation of 1 year. Assuming
that the lives of these machines follow
approximately a normal distribution, find
the probability that the mean life of a
а.
random sample of 9 such machines falls between
6.4 and 7.2 years
b.
The value of x to the right of which 15% of
the means computed from random samples size 9
would fall.
(upload the picture of solution and roundoff
your final answer into 5 decimal places)
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