Question: Question 11 - Thanks so much! Question 11 (6 points) Listen A junior engineer has to build a sample mean chart for the machines making

Question 11 - Thanks so much!

Question 11 (6 points) Listen A junior engineer has to build a sample mean chart for the machines making Oreo cookies. He knows from numerous previous samples that this service life of the cream injectors is normally distributed with a mean of 760 hours and a standard deviation of 41.5 hours. In the last three weeks, he tested the service life on random samples of four production runs with these results: Sample Hours 1 738 757 779 748 2 788 778 763 758 3 763 770 772 766 What is the value of I? (Keep one decimal place)

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