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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
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 ounces and a standard deviation of two ounces. Each day last week, he randomly selected four packages and weighed each:
Day Weight ounces
Monday
Tuesday
Wednesday
Thursday
Friday
What is the standard deviation of the sampling distribution of sample means for whenever this process is in control?
Multiple Choice
ounces
ounces
ounces
ounce
ounces
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