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  3. 10. the grades of students are normal distributed.

10. The grades of students are normal distributed. In a class of 10 students the average...

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Statistics

10. The grades of students are normal distributed. In a class of10 students the average grade on a quiz is 16.35, with a standarddeviation of 4.15. ( 3 marks ) a) Find the 90% confidence intervalfor the population mean grade. b) If you wanted a wider confidenceinterval, would you increase or decrease the confidence level?

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3.7 Ratings (322 Votes)
Given that 1635s 415n 10Degrees of freedom df n 1 10    See Answer
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