The shafts in Exercise 2-53 are further classified in terms of the machine tool that was used for manufacturing the shaft.

(a) If a shaft is selected at random, what is the probability that the shaft conforms to surface finish requirements or to roundness requirements or is from Tool 1?

(b) If a shaft is selected at random, what is the probability that the shaft conforms to surface finish requirements or does not conform to roundness requirements or is from Tool 2?

(c) If a shaft is selected at random, what is the probability that the shaft conforms to both surface finish and roundness requirements or the shaft is from Tool 2?

(d) If a shaft is selected at random, what is the probability that the shaft conforms to surface finish requirements or the shaft is from Tool 2?

Transcribed Image Text:

Tool 1 roundness conforms yes no surface finish yes 200 1 conforms no 4 2 Tool 2 roundness conforms yes surface finish yes 145 conforms no 8 no 4 9