5. A teacher believes that the average exam scores of her current class is higher than the historical average of 75. She takes a random sample from her class with scores: 77, 80, 74, 76, 82, 77, 79, 76, 81 Formulate and implement a one-sided hypothesis test to evaluate the teacher's claim at the 5% level. You may use that the standard deviation of the sample is approximately 2.5.

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5.
A teacher believes that the average exam scores of her current class is higher than the
historical average of 75. She takes a random sample from her class with scores:
77, 80, 74, 76, 82, 77, 79, 76, 81
Formulate and implement a one-sided hypothesis test to evaluate the teacher's claim at the 5% level.
You may use that the standard deviation of the sample is approximately 2.5.
Transcribed Image Text:5. A teacher believes that the average exam scores of her current class is higher than the historical average of 75. She takes a random sample from her class with scores: 77, 80, 74, 76, 82, 77, 79, 76, 81 Formulate and implement a one-sided hypothesis test to evaluate the teacher's claim at the 5% level. You may use that the standard deviation of the sample is approximately 2.5.
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