SOLUTION: Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtain

Algebra ->  Probability-and-statistics -> SOLUTION: Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtain      Log On


   

Question 1197673: Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the scores:
Grades 68.4 96 69 65 62.7 88 74.4 69 69 85.5
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi 
Sample:  68.4 96 69 65 62.7 88 74.4 69 69 85.5
n = 10
x̄ = Sum/10 = 74.7
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