PROBLEM 4.2 (pg 63, #17) Let A denote the event that the next request for assistance...

Question

Question

Answer 1

Answer #1

SolutionA:

P(A^c)=1-P(A)

=1-0.25

=0.75

ANSWER:0.75

Solutionb:

P(AUB)=P(A)+P(B)-P(A and B)

P( A and B)=P(A)*P(B) since both are independent events since outcome of one event does not effect the outcome of other

therefore

P(AUB)=0.25+0.65-0.25*0.65

P(AUB)=0.7375

ANSWER:0.7375

Solutionc:

P(AUB)^c= 1-P(AUB)

=1-0.7375

=0.2625

ANSWER:

0.2625

Answer 2

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