SOLUTION: in a statistics course the average final exam score is 78 with a standard deviation of 2. Find the test score that corresponds to a z-score of -1.7.
74.6
81.4
92
Algebra.Com
Question 1110079: in a statistics course the average final exam score is 78 with a standard deviation of 2. Find the test score that corresponds to a z-score of -1.7.
74.6
81.4
92
78
Answer by amarjeeth123(570) (Show Source): You can put this solution on YOUR website!
Mean mu=78
Standard Deviation sigma=2
(x-mu)/sigma=-1.7
Plugging in the values,
(x-78)/2=-1.7
x-78=-3.4
x=78-3.4=74.6
Answer=74.6
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