A gasoline tank for a certain car is designed to hold 19 gallons of gas. Suppose that the random variable x = actual capacity of a randomly selected tank has a distribution that is well approximated by a normal curve with mean 19.0 gallons and standard deviation 0.2 gallon.
What is the probability that a randomly selected tank will hold at least 18.9 gallons?

A)0.19
B)0.69
C)1
D)0.31
E)0.81

Question

A gasoline tank for a certain car is designed to hold 19 gallons of gas. Suppose that the random variable x = actual capacity of a randomly selected tank has a distribution that is well approximated by a normal curve with mean 19.0 gallons and standard deviation 0.2 gallon. ​
What is the probability that a randomly selected tank will hold at least 18.9 gallons?
​
A)0.19
B)0.69
C)1
D)0.31
E)0.81

Quizplus · Accepted Answer

The Answer of A gasoline tank for a certain car is designed to hold 19 gallons of gas. Suppose that the random variable x = actual capacity of a randomly selected tank has a distribution that is well approximated by a normal curve with mean 19.0 gallons and standard deviation 0.2 gallon. ​
What is the probability that a randomly selected tank will hold at least 18.9 gallons?
​
A)0.19
B)0.69
C)1
D)0.31
E)0.81

A Gasoline Tank for a Certain Car Is Designed to Hold