5) An official at the department of education in Capricorn district plans to use an average of a random sample of 150 sixth graders from a large school in the district to estimate the mean score that all the sixth graders in the district are likely to get if they took a certain mathematics test. If, based on past experience, He knows that a population standard deviation is 9.4 for such data, i) ii) What can He declare with probability 0.95 about the maximum error? If he takes the sample and gets a mean of 61.8. Construct a 99% confidence interval for the mean score of all the sixth graders in this district.

5) An official at the department of education in Capricorn district plans to use an average of a random sample of 150 sixth graders from a large school in the district to estimate the mean score that all the sixth graders in the district are likely to get if they took a certain mathematics test. If, based on past experience, He knows that a population standard deviation is 9.4 for such data, i) ii) What can He declare with probability 0.95 about the maximum error? If he takes the sample and gets a mean of 61.8. Construct a 99% confidence interval for the mean score of all the sixth graders in this district.

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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