any help would be greatly appreciated

A survey shows that about 65% of all respondents chose to have dogs over cats. Suppose that 15 people participated in survey and they are each deemed independent of each other. Use the calculator options binompdf or binomcdf to find the probability of success in following questions: a) What is the probability that only 11 of these 15 people will like dogs? b) What is the probability that all of them like dogs? Round your answers to the nearest thousandths place