Question

An Izod impact test was performed on 27 specimens of PVC pipe. The sample mean is...

An Izod impact test was performed on 27 specimens of PVC pipe. The sample mean is ?̄=
1.25 and the sample standard deviation is ? = 0.25. Compute a 99% prediction interval on the impact
strength of the next specimen of PVC pipe tested.

Math   Statistics-And-Probability   
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Answer #1

Refer t-table or use excel function "=T.INV.2T(0.005,26)" to find the value of t

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