suppose that the district official takes her sample and gets x = 61.8. Use all the given information to construct a 99% confidence interval for the mean score of all the sixth graders in the district.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A district official intends to use the mean of a random sample of 150 sixth graders
from a very large school district to estimate the mean score that all the sixth
graders in the district would get if they took a certain arithmetic achievement
test. If, based on experience, the official knows that = 9.4 for such data,
suppose that the district official takes her
sample and gets = 61.8. Use all the given information to construct a 99%
confidence interval for the mean score of all the sixth graders in the district.
Transcribed Image Text:A district official intends to use the mean of a random sample of 150 sixth graders from a very large school district to estimate the mean score that all the sixth graders in the district would get if they took a certain arithmetic achievement test. If, based on experience, the official knows that = 9.4 for such data, suppose that the district official takes her sample and gets = 61.8. Use all the given information to construct a 99% confidence interval for the mean score of all the sixth graders in the district.
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