I need check solve this questions of Statistics and probability

QUESTION 19 Which of the following statement is not true for the Binomial distribution? There are two possible outcomes: true or false, success or failure, yes or no. Experiment consists of n identical trials. The probability of failure varies from trial to trial The trials are independent QUESTION 20 At a local university 50.95% of incoming first-year students have compurts. If 3 students are selected at random, find the probality that none have computers. Round your answer to four decimal places. QUESTION 21 A pair of fair dice is tossed. For this random experiement, consider two events A and B from the same sample space descibed as follows: A: the sum of the two numbers is 8. B: the second number of the two dice shows a 6. Find P(A and B). Round your answer to three decimal places. 1/36 Gave All Answer QUESTION 23 A grocery store employs cashiers, stock clerks, and deli personnel. The distribution of employees according to marital status is given by the following table. Cashier Stock clerks Deli personnel Married 8 12 3 Not Married 5 15 2 Which of the following events is a simple event? . Deli personnel Cashier and not married Deli personnel and not married Cashier and married