SCENARIO 9-3 An Appliance Manufacturer Claims to Have Developed a Compact Microwave

question 92

Short Answer

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,for a test with a level of significance of 0.05,the critical value would be .

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SEC Rule 10b5-2

A regulation established by the Securities and Exchange Commission (SEC) that clarifies the definition of insider trading, particularly in relation to the misuse of non-public information.

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A type of equity security that represents ownership in a corporation, giving holders voting rights and a share in the company's profits through dividends.