Question: Provide null and alternate hypothesis for each in notation form: a.) on average is repair time for a particular sub assembly more than two hours

Provide null and alternate hypothesis for each in notation form:

a.) on average is repair time for a particular sub assembly more than two hours

b.) b.) the production engineer is studying whether the standard deviation of process time for Machine A is 12 minutes

c.) The quality control manager of an electronic subassembly manufacturer states that the proportion of defects in components parts produced by Supplier C is different than 0.3

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