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Records of student patients at a dentist office


Solve the following:

Q: Records of student patients at a dentist's office concerning fear of visiting the dentist suggest the following proportions.

                                         School                                        

                                      Elementary                 Middle                   High

Fear

0.12

0.08

0.05

Do not fear

0.28

0.25

0.22

 For a student selected at random, consider the events

A= (fear),             M= (middle school)

(a) Find the probabilities

P(A),              P(AM)

P(M),              P(A UM)

(b) Are A and M independent?

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