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# Problem-14 A Six- ~Sigma Black Belt is studying the performance of financial analysts from a bank using their scores on a certain aptitude test She has collected d...

## Question

###### Problem-14 A Six- ~Sigma Black Belt is studying the performance of financial analysts from a bank using their scores on a certain aptitude test She has collected data on a random sample lof 52 analysts with an average of 85 and standard deviation of 4.2, Find a 90% Cl for the average score of all analysts from this bank b) Find a 90% Cl on the standard deviation of the scores

Problem-14 A Six- ~Sigma Black Belt is studying the performance of financial analysts from a bank using their scores on a certain aptitude test She has collected data on a random sample lof 52 analysts with an average of 85 and standard deviation of 4.2, Find a 90% Cl for the average score of all analysts from this bank b) Find a 90% Cl on the standard deviation of the scores

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