Question 5 1 p A college admissions website tells potential students that the average amount spent on textbooks is $300.00 per semester. A student group decides to research book cost because it now believes that book cost per semester is greater than $300.00. A random sample of 225 current students finds that the sample average is $324 with a standard deviation of $60. In this situation, the null hypothesis is that: the average for all students is greater than $300 O the average for all students is greater than $324 O the average for all students equals $300 O the average for all students equals $324