The yield of a chamical process is being studied from

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The yield of a chamical process is being studied. From previous experience with disprocess the standart deviation of yield is known to be 3. The past 5 days of plant operation have resulted in the fallowing yields : 91.6 , 88.75 , 90.8 , 89.95 , and 91.3 %. Use α=0.05.

a) What sample sizes would be required to detect a true mean yield of 85% with probability 0.95?

b) what is type 2 error probabilty if the true mean yield is 92%? (pls explain how did u solve)

Reference no: EM13632286

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