ok ht b. What is the probability that none of the households in the sampled group have landline phone service? (Round your answer to 4 decimal places.) Probability 0 nces c. What is the probability that exactly five of the households in the sampled group have a landline phone service? (Round your answer to 4 decimal places.) Probability d. Given the probability distribution, what is the mean number of households with landline service? (Round your answer to 3 decimal places.) Mean