The amount that airlines speed on food per passenger is normally distributed with means $8.00 and standard deviation $2.00. What is the probability that a randomly selected airline spends more than $12.50?

Question

The amount that airlines speed on food per passenger is normally distributed with means $8.00 and standard deviation $2.00.  What is the probability that a randomly selected airline spends more than $12.50?

PsyDAG · Answer

Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.