Required in order to achieve this standard of quality

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Reference no: EM132068967

Suppose that the Dallas School District wants to achieve Six Sigma quality levels of performance in delivering students to school. They have established a 23-minute window as an acceptable range within which buses carrying students should arrive at school.

a. What is the maximum allowable standard deviation of arrival times required in order to achieve this standard of quality? (Round your answer to 2 decimal places.)

b. If they achieve this standard, about how many times out of a million deliveries will a bus deliver students either too early or too late? (Round your answer to 1 decimal place.)

Reference no: EM132068967

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