Statistics for Economics and Business 2 (ECON206)
Faculty of Economics and Management Science (FEMS)
Semester: Resit
Level: 200
Year: 2019
Exercise 1: (20 marks)
A committee of five is chosen by drawing lots from a group of eight men and four women.
Determine the probability that the committee contains exactly three men.
Exercise 2: (20 marks)
A notorious gang of outlaws contains five gunfighters called Smith, four called Jones and one
called Cassidy. In a gunfight, three of the gang are killed. Assuming that each gunfighter had
the same probability of being kicked, what is the probability that the three killed in the
gunfight all had different names?
Exercise 3 (15 marks)
The random variable X can only take the values 2 and 5. Given that the value 5 is twice as
likely as the value 2, determine the expectation of X.
Exercise 4 (15 marks)
Determine the expectation of the random variable X, which has probably distribution given
below:
Values of X 0 1 2 3
Probability 0.3 0.4 0.2 0.1
THE UNIVERSITY OF BAMENDA
FACULTY OF ECONOMICS AND MANAGEMENT SCIENCES
Resit Course: Statistics for Econs and Business 2: ECONS206
Credit Value:
Course Lecturers:
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Venue: Instruction:
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