A= 20

B= 6

a. On average a certain intersection results in B trafc accidents per month. Calculate the probability that for any given month at this intersection? i. Exactly T accidents will occur. ii. Less than 4 accidents occur. (115 Marks} b. A certain machine makes electrical resistors having a mean resistance of 4D ohms and a standard deviation of A ohms. Assuming that the resistance Follows the normal distribution and can be measured to anyr degree of accuracy. evaluate for resistance exceeding 43 ohm. {05 Marks}