Answer: 0.20
Step-by-step explanation:
The given probability distribution of number of televisions per household in a small town:
x      0    1   2    3
​P(x) ​ 0.05 0.15 0.25 0.55
To find : The probability of randomly selecting a household that has one or two televisions ( in both parts a. and b.).
The computations for this would be :
P( 1 or 2) = P(1)+P(2)
= 0.05+0.15
= 0.20
Hence, the required probability= 0.20
