A recent survey found that 82 82 of households had Internet

A recent survey found that 82 %82% of households had Internet access and 74 %74% of households had cable television. Also, it was reported that 71 %71% of the households in the survey had both Internet and cable television. Determine the probability of selecting a household that had either Internet access or cable television

Solution

Let

C= has cable
I = has internet

Thus,

P(C or I) = P(C) + P(I) - P(C and I)

= 0.82 + 0.74 - 0.71

= 0.85 [ANSWER]