[Question 4) a) Registrar Department reserved an average of 15 report per day of lost identity card. Find the probability that during a given day the number of report received i. Exactly 10. ii. Between 14 to 18. iii. No report. iv. At most 5. v. At least 5. b) Refer to question 4(a), nd the mean and standard deviatron of the probability distribution. c) On average, 18 out of 30 are degree holder. Using the Peisson formula, nd the probability that in a random sample of 30, the person are degree holder is i, Exactly 15, ii. 15t0 17