Final answer:
The mean for the binomial distribution when n=100 and p=0.75 is 75 (option a).
Step-by-step explanation:
The mean for the binomial distribution can be calculated using the formula:
mean = n * p
where n is the number of trials and p is the probability of success.
In this case, n = 100 and p = 0.75. Substituting these values into the formula, we get:
mean = 100 * 0.75 = 75
Therefore, the mean for the binomial distribution when n=100 and p=0.75 is 75 (option a).