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    Exam 20: Inferences About Means
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    Based on a Sample of Size 42,a 95% Confidence Interval
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Based on a Sample of Size 42,a 95% Confidence Interval

Question 44

Question 44

Multiple Choice

Based on a sample of size 42,a 95% confidence interval for the mean score of all students on an aptitude test is from 57.2 to 64.8.


A) 3.8
B) 0.05
C) 7.6
D) 1.15
E) Not enough information is given.

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