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 20% of the speeds?
A) about 84.7 km/h,about 69.3 km/h
B) about 86.1 km/h,about 67.9 km/h
C) about 61.6 km/h,about 92.4 km/h
D) about 95.2 km/h,about 58.8 km/h
E) about 74.7 km/h,about 79.3 km/h
Correct Answer:
Verified
Correct Answer:
Verified
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