Exam2024Proposed solution included

CSC 211 Probability and Statistics Exam 2024

CSC 211: First Semester Examinations, 25 January 2024, Dr Nyanga \& Mme Tabo F.D. (70 marks), University of Buea, Faculty of Science, Dept of Computer Science: a grouped-frequency-table MCQ section (two sub-questions flagged 'none of these' where the printed option set appears corrupted/reused, including an invalid non-class option 'D: 9'), a husband/wife independent-survival probability block, a continuous pdf $f(x)=x^2/3$ on $(-1,2)$ with a derived-coefficient and transformed-variable expectation, a digital-distortion binomial problem, a joint density $f(x,y)=10xy^2$ flagged as not integrating to 1 (the standard textbook constant is 6, not 10), and a Section B one-way ANOVA interpretation plus an Excel-formula question.

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University of Buea

Faculty of Science - FS

Computer Science - CSC

CSC2112024

Probability and Statistics

Exam · First Semester · Level 200

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8.
Given two samples X1 and X2 with means 8 and 6 respectively and sample sizes 6 and 4 respectively. Then their combined mean is A: 7.20 B: 14 C: 72 D: 12 E: none of these The probabilities that a husband and wife will be alive in 20 years from now are given by 0.9 and 0.8. (Hint: being alive is independent). Find the probability that in 20 years

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