Suppose the round trip airfare between Boston and Orlando follows the normal probability distribution with a mean of $387.20 and a standard deviation of $68.50.What is the probability that a randomly selected airfare between Boston and San Francisco will be less than $300?
A) 0.4286
B) 0.1020
C) 0.2005
D) 0.3192

Question

Quizplus · Accepted Answer

To find the probability, we calculate the z-score: z = (300 - 387.20) / 68.50 ≈ -1.27. Using the standard normal distribution table, the probability corresponding to z = -1.27 is approximately 0.1020.

Suppose the Round Trip Airfare Between Boston and Orlando Follows