Question 243148
a sales promoter offers a special price for a scanner with a printer. The probabilities that each functions satisfactorily over three years are 0.68 and 0.72 respectively.What is the probability that at the end of the three years:
1)both scanner and printer will function satisfactorily?
The events are independent so P(both) = 0.68*0.72
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2)only the printer will be functioning?
P(print only) = 0.68(1-0.72)
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3) At least one of two machines will be functioning?
Since p(none is operating) = 0.32*0.28,
P(at least one) = 1- P(none) = 1 - 0.32*0.28
please state any assumptions made.
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Cheers,
Stan H.