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

question 66

Multiple Choice

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

• A)unknown
• B)8.33
• C)0.833
• D)2.89
• E)1.89

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Definitions:

Flexible Manufacturing Systems

describe highly automated manufacturing processes that can be rapidly adapted to produce different products or product variants, maximizing efficiency and minimizing production times.

Labor Supply

The total hours that workers are willing and able to work at a given wage rate, within an economy or a specific sector.

Steel Manufacturer

A company involved in the production and processing of steel, an alloy of iron and carbon, for various industrial uses.

Jewelry Manufacturer

A business or enterprise that specializes in the production and fabrication of jewelry articles using various materials, techniques, and designs.