1. The age of professional racecar drivers is normally distributed with a mean of 30 and a standard deviation of 6. One driver is randomly selected. What is the probability that this driver is between 31 and 36 years old?
a. .023
b. .878
c. .275
d. not enough information to answer
2. The age of professional racecar drivers is normally distributed with a mean of 30 and a standard deviation of 6. One driver is randomly selected. What is the probability that this driver is less than 18 years old?
a. .023
b. .878
c. .275
d. not enough information to answer
1 answer
d. not enough information to answer
1 answer