4.55 Records of student patients at a dentist's office concerning fear of visiting the dentist suggest the following proportions. School Elementary Middle High Fear .12 .08 .05 Do not fear .28 .25 22 For a student selected at random, consider the events [Fear] M = [Middle school] A = a. Find the probabilities P(A) Р(M) P(AM) P(AUM) b. Are A and M independent?

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4.55 Records of student patients at a dentist's office concerning fear of visiting the dentist suggest the following proportions.
School
Elementary Middle High
Fear
.12
.08
.05
Do not fear
.28
.25
.22
For a student selected at random, consider the events
A = [Fear]
M = [Middle school]
a. Find the probabilities
P(A)
Р(М)
P(AM)
P(AU M)
b. Are A and M independent?
Transcribed Image Text:4.55 Records of student patients at a dentist's office concerning fear of visiting the dentist suggest the following proportions. School Elementary Middle High Fear .12 .08 .05 Do not fear .28 .25 .22 For a student selected at random, consider the events A = [Fear] M = [Middle school] a. Find the probabilities P(A) Р(М) P(AM) P(AU M) b. Are A and M independent?
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