5. Suppose X~N(18, 3.2). Find the probability that x is no more than 11 6. It has been estimated that only about 32% of students opened the course textbook. Suppose you randomly survey 65 students. Identify n, p and q Find the mean and the st. deviation Find the probability that exactly eighteen students, out of 65 participated in a survey, opened course textbook. Find the probability that less than eighteen students, out of 65 participated in a survey, opened course textbook. find the probability that at least twenty students, out of 65 participated in a survey, opened course textbook