ay is built bility Question 2 ([2 + 2] + 2 = 6 marks) Neil Hopkins d monetary vi a) Mr Smith is a local tax agent with 20 years of experience. He knows that the time taken to cted monetar complete a single tax return is normally distributed with a mean of 30 minutes and a standard deviation of 12 minutes. 800 x 0.3 + -4 00 x 0.3 + 40 Find the probability that a selected tax return will take more than 50 minutes to 500 x 0.3 + 4( complete Hence Locati value of perfe ext of the abo 0.3 + 400 x 0 - 760 = $370 ii) Mr. Smith has just been approached by a small company for him to complete the tax ion D) has just returns of all of their 20 employees within the next working day. Assuming that whether the hi Mr. Smith works 8 hours a day, what is the probability that the total time it takes Mr. r location D ar Smith to complete all the tax returns for the 20 employees is less than 8 hours? 500 x 0.3 + 3