You only need to answer part d!!!!!!! (Due to S. Ross) In a certain chemical pro

Question

You only need to answer part d!!!!!!!

(Due to S. Ross) In a certain chemical process, it is very important that a particular solution that is to be used as a reactant have a pH of exactly 8.20. A method for determining pH that is available for solutions of this type is known to give measurements that are normally distributed with a mean equal to the actual pH and with a standard deviation of .02. Suppose 10 independent measurements yielded the following pH values: 8.18, 8.17, 8.16, 8.15, 8.17, 8.21, 8.22, 8.16, 8.19, 8.18 dsribted ent me the

Explanation / Answer

(a)Sine the population standard deviation is known (0.02) a z test should be used.

(b)The required sample size is 10.

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