College admissions administrators at a university are reevaluating their entrance requirements. They believe that the mean GPA for graduating high school seniors has increased dramatically over the last decade. They randomly sample 85 records of graduating seniors from 10 years ago (sample 1) and find an average GPA of 2.68. An independent random sample of 80 current graduating seniors yields an average GPA of 2.94. If the population variance of high school GPAs is 0.2601, does it appear that there was an increase in mean GPA over the last decade? Select the correct p-value and decision below. (Use a = 0.01.)

It is known that WAIS IQ scores are normally distributed with a=100 and2=15. Approximately what proportion of the population has an IQ score greater than145?

If df = 12, what does0.99²equal?