If X, the Time (In Minutes)to Complete an Change Job $\le$

question 14

Multiple Choice

If x, the time (in minutes) to complete an change job at certain auto service station, is uniformly distributed over the interval 20 to 30, inclusively (20 $\le$ x $\le$ 30) , then the probability that an oil change job is completed in 25 to 28 minutes, inclusively, i.e., P(25 $\le$ x $\le$ 28) is __________________.

• A)0.250
• B)0.500
• C)0.300
• D)0.750
• E)81.000

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Definitions:

Retail Inventory Method

An accounting technique used to estimate inventory value by comparing the cost of goods sold to the total sales.