Mathematics, 20.05.2020 12:58 pnewma16
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. 1) The appropriate hypotheses to determine if the manufacturer's claim appears reasonable are H subscript 0 colon and H subscript 1 colon. (2 points) 2) For a test with a level of significance of 0.05, the critical value would be . (2 point) 3) The value of the test statistic is . (4 points) 4) Is there evidence that a compact microwave oven consumes a mean of no more than 250 W? (2 points)
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An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of...
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