Question: ANSWER CHOICES A. 2 ounces B. 1 ounce C. 0.4 ounces D. 0.1 ounces E. 0.5 ounces A quality analyst wants to construct a sample

ANSWER CHOICES A. 2 ounces B. 1 ounce C. 0.4 ANSWER CHOICES

A. 2 ounces

B. 1 ounce

C. 0.4 ounces

D. 0.1 ounces

E. 0.5 ounces

A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from past experience that whenever this process is in control, package weight is normally distributed with a mean of 20 ounces and a standard deviation of two ounces. Each day last week, he randomly selected four packages and weighed each Day Monday Tuesday Wednesday Thursday Friday Weight (ounces) 23 22 23 24 23 21 19 21 20 19 20 21 18 19 20 19 18 20 22 20 What is the standard deviation of the sampling distribution of sample means for whenever this process is in control

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