Spencer asked Tasha to show her the article. “Let’s see,” Spencer said. “According to this, the average tuition and fees for the 2012-2013 school year were normally distributed, with a mean of $28,936 and a standard deviation of $3,339.” Tasha looked at Spencer quizzically. “I want to attend Parkview University, and they are charging $31,407. You’re taking statistics right now, Spencer. Based on the figures in the article, what percentage of schools are charging less tuition than Parkview University?”

Spencer finds that (A) 60 % of private universities charge less tuition than Parkview University.

HINT First you have to find the z-score using the formula . The is the sample mean, is the population mean, and is the population standard deviation. Once you have the z-score, you can use the table to find the corresponding p-value.