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Susan Wants Fo Find A 99%99 \% Confidence Interval for the Time It Takes Her to Drive

Question 4

Multiple Choice

Susan wants fo find a 99%99 \% confidence interval for the time it takes her to drive home from school. She kept records for 15 days and found her average time to drive was 17.5 minutes with a standard deviation of 4.7 minutes. Calculate Susan's maximum error of estimate.


A) 2.38
B) 3.12
C) 2.11
D) 1.68

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