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Samples of a cast aluminum part are classified on the basis of surface finish (in microinches)...

Samples of a cast aluminum part are classified on the basis of surface finish (in microinches) and edge finish. The results of 100 parts are summarized as follows:

Edge Finish
Excellent Good

Surface Finish
 Excellent 77 14
Good 1 8

Let A denote the event that a sample has excellent surface finish, and let B denote the event that a sample has excellent edge finish. Determine the number of samples in each of the following events.

(a) A′∩B= Enter your answer in accordance to the item a) of the question statement

(b) B′= Enter your answer in accordance to the item b) of the question statement

(c) A∪B= Enter your answer in accordance to the item c) of the question statement

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