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The length of time to complete a door assembly on an automobile factory assembly line is...

The length of time to complete a door assembly on an automobile factory assembly line is normally distributed with mean μ = 6.7 minutes and standard deviation σ = 2.2 minutes. For a door selected at random, what is the probability that the assembly-line time will be 5 minutes or less (round to the nearest ten-thousandths, 0.XXXX)?

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Let "X" be length of time to complete a door assembly on an automobile factory assembly line

the probability that the assembly-line time will be 5 minutes or less is

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