The Amount of Time to Complete a Particular Exam Is

question 31

Essay

The amount of time to complete a particular exam is believed to have a mean of 52 minutes and a standard deviation of 4.8 minutes. A sample of 36 students was selected and their times to finish the exam recorded.
Is the sampling distribution of the sample mean approximately normal?
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What is the mean?
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What is the standard deviation?
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What is the probability this sample produces an average of less than 50 minutes?
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If the sample mean is actually 50 minutes, is it likely that = 52?
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Explain.
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