Question 4.17: A manufacturer’s process for analyzing aspirin tablets has a...
A manufacturer’s process for analyzing aspirin tablets has a known variance of 25. A sample of ten aspirin tablets is selected and analyzed for the amount of aspirin, yielding the following results
\begin{array}{llllllllll} 254 & 249 & 252 & 252 & 249 & 249 & 250 & 247 & 251 & 252 \end{array}
Determine whether there is any evidence that the measurement process is not under statistical control at \alpha=0.05.
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