Refer to Exercise 15. a. Find a (95 %) lower confidence bound for the mean wall thickness.
Question:
Refer to Exercise 15.
a. Find a \(95 \%\) lower confidence bound for the mean wall thickness.
b. Find a \(99 \%\) upper confidence bound for the mean wall thickness.
Data From Exercise 15:
In a sample of 100 steel canisters, the mean wall thickness was \(8.1 \mathrm{~mm}\) with a standard deviation of \(0.5 \mathrm{~mm}\).
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