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Approximately a normal distribution

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.

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Solution Preview :

Prepared by a verified Expert

Finance Basics: Approximately a normal distribution

Reference No:- TGS0681589

Have a Question? (oR Write a Review)

Recent Questions Asked Finance Basics

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Solution Preview :

Prepared by a verified Expert

Finance Basics: Approximately a normal distribution

Reference No:- TGS0681589

Recent Questions Asked Finance Basics

Q : Equality of the two population variances

Q : How would change if regression was equal to one

Q : Identify the three major parts of this statement

Q : Would your answer change if division s can sell

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