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Theclosestto the proportion of orders that are processed inless than240 seconds is 17%How to determine the closest proportion?From the question, the given parameters about the distribution areMean value of the set of data = 276Standard deviation value of the set of data = 38The actual data value = 240The z-score of thedata valueis calculated using the following formulaz = (x - mean value)/standard deviationSubstitute the known values in the above equation, so, we have the following representationz = (240- 276)/38Evaluatez = -0.95Theclosest proportionis then calculated as:P(x < 240) = P(z < -0.95)From the z table ofprobabilities, we have;P(x < 240) = 0.17106This givesP(x < 240) = 17.106%ApproximateP(x < 240) = 17%Hence, theclosest proportionis 17%Read more aboutprobabilityat:brainly.com/question/25870256#SPJ1...

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