A Random Sample of 49 Statistics Examinations Was Taken

question 49

Multiple Choice

A random sample of 49 statistics examinations was taken. The average score, in the sample, was 84 with a variance of 12.25. The 95% confidence interval for the average examination score of the population of the examinations is

• A) 83.45 to 84.55.
• B) 80.07 to 87.93.
• C) 83.29 to 84.71.
• D) 80.5 to 87.5.

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