Find null hypothesis if repair cost has a normal curve

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Reference no: EM13137599

A copy machine repair company claims that its average repair cost is less than $100. To check this claim, a simple random sample of 30 repairs made by this company is taken. The sample average is $97, and the SD is $17. Assume that the repair cost has a normal curve.What is the null hypothesis?

Reference no: EM13137599

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