Question: Continuation of Exercise 2-1. (a) Plot the data on normal probability paper. Does concentration appear to have a normal distribution? (b) Suppose it has been

Continuation of Exercise 2-1.

(a) Plot the data on normal probability paper. Does concentration appear to have a normal distribution?

(b) Suppose it has been determined that the largest observation, 68.7, was suspected to be an outlier. Consequently, it can be removed from the data set. Does this improve the fit of the normal distribution to the data?

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