THE HONG KONG POLYTECHNIC UNIVERSITY
DEPARTMENT OF APPLIED MATHEMATICS
Subject Code: AMA372
Subject Title: Mathematical Methods for
Semester 2, 2011/2012
10 March 2012
11:00a.m. 12:30 p.m.
Time Allowed: 90 minutes
1. The probability that a visit to a primary care physician‘s [PCP] ofﬁce results in neither
lab work nor refetrai to a specialist is 35%. Ofthose coming to e PCF‘S oﬁice, 3D“/E _
are referred to Specialists and 413% require lab work.
Determine the |:+ro
7P- 3 I.‘-‘L'
1. An urn ebnieins Ii] balls: 4 red and 15 blue. A. seeend um contains 16 red bells and an
unknewn number of blue balls. A single ball is drawn from each um. The prebability
that both balls are the same eeler is 0.44.
Caieuiate the number
An insurance company issues life insurance policies in three separate categories:
steudani, preferred, and ultra-preferred. DI the eernpany‘s phlieyhelders, 541% are
standard, 49% are preferred, and 10% are ultra-preferred. Each Standard peljey