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The average number of misprints per page in a company’s annual reports is 0.4. If a page is selected

at random, find the probability that it will contain more than two misprints. (5 marks)

(b) On average, one in every four new clients approached by an insurance salesman purchases an insurance policy. Suppose that the salesman approaches five new clients.

(i) Find the probability that exactly two will buy a policy. (5 marks)

(ii) Find the probability that at least two will buy a policy. (5 marks)

Explanation:

B

in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.