Using proportions, it is found that there is a 0.54 = 54% probability that a randomly selected household owns a cat.
A proportion is a fraction of total amount.
In this problem, the proportions associated with owning a cat are given by:
Hence:
p = 0.7(0.6) + 0.3(0.4) = 0.42 + 0.12 = 0.54.
0.54 = 54% probability that a randomly selected household owns a cat.
More can be learned about proportions at https://brainly.com/question/24372153