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QUESTION
Reconsider the paint-drying situation of example 8.5, in which drying time for a test specimen is normally distrib- uted with ???? 5 9. the hypotheses h0: ???? 5 75 versus ha: ???? , 75 are to be test
Reconsider the paint-drying situation of example 8.5, in which drying time for a test specimen is normally distrib- uted with ???? 5 9. the hypotheses h0: ???? 5 75 versus ha: ???? , 75 are to be tested using a random sample of n 5 25 observations.
