Answer:
0.578
Step-by-step explanation:
Given that
The probability that at most one of these purchases an electric dryer = 0.422
Since the most one of these purchase probability is given i.e 0.422
So, the probability of at least two purchase an electric dryer is
= 1 - most one of these purchase probability
= 1 - 0.422
= 0.578
Basically, we subtracted the given probability with the one