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San Diego State University Operations And Supply Chain Management Assignment Help - Probability


Question - 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
(a) 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 a; to the right of which 15% of the means computed from random samples of size 9
would fall.
Nov 17 2013 03:08 AM

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