A poll reported that 63% of adults were satisfied with the job the major airlines were doing. Suppose 20 adults are selected at random and the number who are satisfied is recorded. Complete parts (a) through (e) below. C (a) Explain why this is a binomial experiment. Choose the correct answer below. O A. This is a binomial experiment because there are three mutually exclusive outcomes for each trial, there is a fixed number of trials, the outcome of one trial does not affect the outcome of another, and the probability of success is the same for each trial. OB. This is a binomial experiment because there are two mutually exclusive outcomes for each trial, there is a fixed number of trials, the outcome of one trial does not affect the outcome of another, and the probability of success changes in each trial. O C. This is a binomial experiment because there are two mutually exclusive outcomes for each trial, there is a random number of trials, the outcome of one trial does not affect the outcome of another, and the probability of success is the same for each trial. D. This is a binomial experiment because there are two mutually exclusive outcomes for each trial, there is a fixed number of trials, the outcome of one trial does not affect the outcome of another, and the probability of success is the same for each trial. (b) Find and interpret the probability that exactly 11 of them are satisfied with the airlines. The probability that exactly 11 adults are satisfied with the airlines is 0.1354. (Round to four decimal places as needed.) Interpret the probability. Select the correct choice below and fill in the answer box within your choice. (Round to the nearest integer as needed.) ⒸA. In 100 randomly sampled surveys of 20 adults, 11 or more of the 20 adults would be expected to be satisfied with the airlines in about O B. In 100 randomly sampled surveys of 20 adults, less than 11 of the 20 adults would be expected to be satisfied with the airlines in about O C. In 100 randomly sampled surveys of 20 adults, exactly 11 out of the 20 adults would be expected to be satisfied with the airlines in about of those surveys. of those surveys. of those surveys.

The question is attached

need help with question C and D please help

In a school there are 20 teachers who teach mathematics or physics. Of these, 12 teach mathematics and 4 teach both physics and mathematics. How many teach physics ?