Multiple Choice
Based on the Normal model for car speeds (in km/h) on a road N(77,9.1) ,what are the cutoff values for the middle 70% of the speeds?
A) about 60.2 km/h,about 93.7 km/h
B) about 70.2 km/h,about 83.1 km/h
C) about 67.5 km/h,about 86.5 km/h
D) about 23.1 km/h,about 130.9 km/h
E) about 50.1 km/h,about 103.9 km/h
Correct Answer:
Verified
Correct Answer:
Verified
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