Round all intermediate steps to six decimal places if necessary. As part of the

Question

Round all intermediate steps to six decimal places if necessary. As part of the quality-control program for a catalyst manufacturing line, the raw materials (alumina and a binder) are tested for purity. The process requires that the purity of the alumina be greater than 84.7%. A random sample from a recent shipment of alumina yielded the following results (in percent): 93.2 87.0 92.2 90.2 87.1 93.6 A hypothesis test will be done to determine whether or not to accept the shipment. (a) State the appropriate null and alternate hypotheses. H_0: mu versus H_1: mu

Explanation / Answer

Here the research hypothesis, whether the purity of alumina is greater than 84.7.

Hence below are the null and alternate hypothesis
H0: mu <= 84.7
H1: mu > 84.7

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