Grades on a standardized test are known to have a mean of 990 for students in the United States. The test is administered to 473 randomly selected students in Florida; in this sample, the mean is 1002.87 and the standard deviation (s) is 106.92. The 95% confidence interval for the average test score for Florida students is (.). (Round your responses to two decimal places.)

Grades on a standardized test are known to have a mean of 990 for students in the United States. The test is administered to 473 randomly selected students in Florida; in this sample, the mean is 1002.87 and the standard deviation (s) is 106.92. The 95% confidence interval for the average test score for Florida students is (.). (Round your responses to two decimal places.)

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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Grades on a standardized test are known to have a mean of 990 for students in the United States. The test is
administered to 473 randomly selected students in Florida; in this sample, the mean is 1002.87 and the standard
deviation (s) is 106.92.
The 95% confidence interval for the average test score for Florida students is (.). (Round your responses to
two decimal places.)

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