SOLUTION: there is a class of 25 students and the mean score of their test is 60 out 100, with a standard deviation of 4 marks from the mean. While other students of that school have a mean

Question 1198313: there is a class of 25 students and the mean score of their test is 60 out 100, with a standard deviation of 4 marks from the mean. While other students of that school have a mean score of 50 on the same test. what will be the t-score for calculating the probability that the school students scored not less than 60 in their test?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
n = 25, x̄ = 60 , s = 4
Ho: m ≥ 60
Ha: m < 60
one-tailed
other students of that school have a mean score of 50 on the same test
t = (50-60)/4/5 = -12.5
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