Hi there, i need help with the questions below:

Q2. Terrence walks to school every morning. The probability that he arrives late is 0.15 and independent of whether he arrives late on any other morning. For a week, in which he decides to walk to school on five mornings, find: a. probability he arrives late on two or fewer mornings. b. probability he arrives late on three or more mornings. c. find the mean and standard deviation of the number of mornings on which he arrives late. It is a binomial distribution because it is independent and there are two possible outcomes. The probability for late is fixed and there is finite number of trails