Conduct a Full Hypothesis Test and Determine If the Given

question 67

Multiple Choice

Conduct a full hypothesis test and determine if the given claim is supported or not supported at the 0.05 significance level. Round all amounts and standard scores to two decimal places.
-In the past, the mean running time for a certain type of flashlight battery has been 8.7 hours. The manufacturer has introduced a change in the production method which he hopes has increased the mean running time. The mean running time for a random sample of 40 light bulbs was 8.9 hours. Test whether the claim that the mean running time of all light bulbs has increased from the previous mean of 8.7 hours is supported or not supported. Assume that ? = 0.5 hours.

• A)not supported
• B)supported

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Academic Achievement

The level of educational accomplishment or success achieved by a student, often measured by grades, tests, or degrees.

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Societal norms dictating the behaviors, tasks, and roles deemed appropriate for individuals based on their perceived gender.

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A method of teaching English to speakers of other languages by exclusively using English in instruction, promoting rapid language acquisition.

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An educational approach that involves teaching academic content in two languages, typically one being the native language and the other a secondary language.