c and d part hand write When a production process is operating correctly, the number of units produced per hour has a normal distribution with a mean of 103 and a standard deviation of 15. A random sample of 9 hours was taken. Complete parts (a) through (d).a. Find the mean of the sampling distribution of the sample means.E(X)(Type an integer or a decimal.)b. Find the variance of the sample mean.(Type an integer or a decimal.)=c. Find the standard error of the sample mean.oz = (Type an integer or a decimal.)d. What is the probability that the sample mean exceeds 104?P(X> 104) = (Round to four decimal places as needed.)

Standard deviation is the proportion of scattering of a bunch of information from its mean. It…

he mean of the sampling distribution of the sample means. ) =] Type an integer or a decimal.) he variance of the sample mean. Type an integer or a decimal.) he standard error of the sample mean. O (Type an integer or a decimal.) s the probability that the sample mean exceeds 104?

he mean of the sampling distribution of the sample means. ) =] Type an integer or a decimal.) he variance of the sample mean. Type an integer or a decimal.) he standard error of the sample mean. O (Type an integer or a decimal.) s the probability that the sample mean exceeds 104?

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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Question

c and d part hand write

When a production process is operating correctly, the number of units produced per hour has a normal distribution with a mean of 103 and a standard deviation of 15. A random sample of 9 hours was taken. Complete parts (a) through (d).
a. Find the mean of the sampling distribution of the sample means.
E(X)
(Type an integer or a decimal.)
b. Find the variance of the sample mean.
(Type an integer or a decimal.)
=
c. Find the standard error of the sample mean.
oz = (Type an integer or a decimal.)
d. What is the probability that the sample mean exceeds 104?
P(X> 104) = (Round to four decimal places as needed.)

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