Hypothesis Test for One Population Mean (t-Test)
The principal of Bon Air school thinks that the average test score of students at Bon Air is higher than the state average of 105. She administers the test to 20 randomly selected students. Among the sampled students, their average test score is 108 with a standard deviation of 10. Based on these results, is this evidence that students at Bon Air have a higher test score than the state average. Assume a significance level of 0.01.