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Question
What sample size is needed to estimate with 95 percent confidence the mean intake of daily calcium within 20 units of the true mean if the intake is normally distributed with a variance of 1900 units?A. 34,671
B. 187
C. 32
D. 19
Answer
This answer is hidden. It contains 2 characters.
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An chart is a control chart on which individual process measurements are plotted versus time.
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