CA2026Proposed solution included

EEC 338 Probability and Statistics CA 2026

EEC 338: Test for EEC338, Probability and Statistics, College of Technology, Department of Electrical and Electronic Engineering, University of Buea (7 May 2026, 07.30-09.00). Exercise 1 (12 marks) covers permutations of the letters of PEPPER, arranging Ms. Jones' 10 books by subject grouping, and a three-set probability problem about students taking Pidgin, Medumba and Bakweri language classes (probability of taking none, exactly one, or at least one of two randomly chosen students taking a class). Exercise 2 (18 marks) covers Bayes' theorem applied to a bolt factory with three machines of differing output shares and defect rates, and a discrete random variable problem involving two elderly life-insurance clients, requiring verification that the total payout is discrete, its probability mass function, and its expectation, variance and standard deviation.

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University of Buea

College of Technology - COT

EEC3382026

Probability and Statistics

CA · Second Semester · Level 300

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1.
How many different letters arrangements of any length, can be made using the letters PEPPER? (2 marks)
2.
Ms. Jones has 10 books that she is going to put on her bookshelf. Of these, 4 are mathematics books, 3 are chemistry books, 2 are history books, and 1 is a language book. Ms. Jones wants to arrange her books so that all the books dealing with the same subject are together on the shelf. How many different arrangements are possible? (4 marks)