1. Lee Iacocca has volunteered to drive one of his Chryslers into a brick wall to demonstrate the effectiveness of airbags used in these cars. Airbags are known to activate at random when the car decelerates anywhere from 9 to 14 miles per hour per second (mph/s). The probability distribution speed at which bags activate is given below.
Mph/s probability
9 0.12
10 0.23
11 0.34
12 0.21
13 0.06
14 0.04
1. if the airbag activates at a deceleration of 12 mph/s or more, Iacocca would get hurt. What is the probability of his being hurt in this demonstration?
2. what is the mean deceleration at air bag activation moment?
3. What is the standard deviation of deceleration at air bag activation time?
Mathbot Says...
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