ace Corbitt - Outlook X University Fitness Scheduling X rses/48252/quizzes/163763/take Tube Maps A researcher wishes to test the claim that the mean cost of tuition and fees per year at four-year public colleges is greater than $10,000. She selects a random sample of 20 four-year public colleges and finds the sample mean to be $10,350. Preliminary work indicates that the population has a normal distribution with a standard deviation of $650. A hypothesis test is to be run to test the claim that the mean cost of tuition and fees per year at four-year public colleges is greater than $10,000. Calculate the test statistic (z-score) of this test. Round to the nearest hundredth (2 decimal places)