Answer: a) 0.1216
b) 0.8784
Explanation:
Let P(watch) = 0.19 ;
And p(don't watch) = 0.81
Find the probability that none of the households are tuned to Found.
P(none) = (0.81)^10 = 0.1216
Find the probability that at least one household is tuned to Found.
P(at least one) = 1-P(none)
1 - 0.1216 = 0.8784