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If X, the Time (In Minutes)to Complete an Oil Change ≤\le

Question 11

Multiple Choice

If x, the time (in minutes) to complete an oil change job at a certain auto service station, is uniformly distributed over the interval 20 to 30, inclusively (20 ≤\le x ≤\le 30) , then the mean of this distribution is ___.


A) 50
B) 25
C) 10
D) 15
E) 5

Correct Answer:

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