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Question 9 (1 point) SCENARIO 9-3 An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W. From previous studies, it is believed that power consumption for microwave ovens is normally distributed with a population standard deviation of 15 W. A consumer group has decided to try to discover if the claim appears true. They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W. Referring to Scenario 9-3, the appropriate hypotheses to determine if the manufacturer's claim appears reasonable are A) HO: H - 250 versus H1: H = 250. ( B) Ho: H s 250 versus / /1: u > 250, C) Ho: H 2 250 versus H1: H