NATIONAL OPEN UNIVERSITY OF NIGERIA
14/16, AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF MANAGEMENT SCIENCES
MARCH/APRIL 2014 EXAMINATIONS
Course Code: BHM711 Credit Unit: 2
Course Title: BASIC MATHS AND STATISTICS FOR MANAGERS
Time Allowed: 2 Hours
Instructions: 1. Attempt question Number one (1) and any other two (2).
- Question number 1 is compulsory and carries 30 marks, while the other
questions carry equal marks each
- Present all your points in coherent and orderly manner
1 (a) List and discuss in detail the various techniques of statistical sampling, and data
collection.
(b) The demand function for bread in markets x and y is given by 3x – 4y = 19 and x -2y =
5 respectively, what are the values for markets x and y?
(c) The ages of a sample of 5 patients in a clinic are recorded as: 38yrs 26yrs 13yrs 41yrs
and 22yrs. What is the standard deviation of ages of the patients? (30 marks)
2 (a) A company pays the salespersons either N6.50, N7.50 or N8.50 with the corresponding weights given
as 14 10 and 2 respectively what is the weighted mean?
(b) The annual income of a bank clerk is N240,000. His income tax is charged at 10 percent, and
the employer deducts 5 percent for the Pension fund. Calculate the clerk’s net monthly
income. (20 marks)
3 (a) If it can take 10 days for five workers to complete a job, how long will it take 8 workers to
complete the same job?
(b) Discuss in detail the various techniques of statistical sampling. What are the various
techniques used in data collection? (20 marks)
4 (a) The length of a one-room apartment is 8 metres more than width. If the area of the
apartment is 48 square metres what are the dimensions?
(b) Joe and Nick are to share N54 such that Joe has N8 less than Nick. What are the shares of
Joe and Nick? (20 Marks)
5 (a) What is the value of the 8th term in a geometric progression with first term 20 and common
ratio 1/3?
(b) The sum of the first 10 terms of an arithmethic progession is -145 and the common difference
is 4.5. What is the value of the 6th term? (20 marks)
- You can get the soft copy for this course (2014 – to date) or the exam summary answers for any course from 08039407882
Exam summary sample below
