The time it takes to complete the assembly of an electronic component is normally distributed with...

The time it takes to complete the assembly of an electronic component is normally distributed with a standard deviation of 4.5 minutes. If a random of 20 components is selected, what is the probability that the standard deviation for the time of assembly of these units is less than 3.0 minutes?

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Expert Solution

Therefore the probability that the standard deviation for the time of assembly of time these unit is less than 3.0 minutes is 0.02

orchestra answered 1 year ago

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