Arecent survey found that 85 % of households had internet access and 81 % of households had cable television. also, it was reported that 72 % 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.

 Probability that either had Internet access or had cable television is 94%.

Step-by-step explanation:

Since we have given that

Probability of households had internet access P(I) = 85% = 0.85

Probability of households had cable television P(C) = 81% = 0.81

Probability of households had both Internet and cable television P(I ∩ C) = 72% = 0.72

We need to find the probability that either had Internet access or had cable television.

As we know the formula:

P(I ∪ C)=P(I) + P(C) - P(I ∩ C)

Hence, our required probability is 94%.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7