Based on a Sample of Size 42,a 95% Confidence Interval

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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