Waec Model Questions Vol1 2019 Geography Question 36

Practice objective / multiple choice question 36 from the 2019 Waec Model Questions Vol1 Geography examination.

Waec Model Questions Vol1 2019 Geography Objective / Multiple Choice Hard Difficulty
Question 36 WAEC_MODEL_QUESTIONS_VOL1 • 2019 • GEOGRAPHY • objective

In a certain region, the annual probability of a flood is 0.12. If a flood occurs, the probability that a landslide also occurs in the same year rises to 0.25. The unconditional annual probability of a landslide (without any condition) is 0.08. (a) What is the probability that at least one of the two hazards (flood or landslide) occurs in a year? (b) The average economic loss when only a flood occurs is ₦150 million, when only a landslide occurs is ₦200 million, and when both occur together the loss equals the sum of the two losses plus an additional ₦50 million due to compounded damage. Calculate the expected annual loss (in million naira) from these hazards.

Answer Options

A. Probability = 0.19 (19%); Expected annual loss = ₦38.3 million
B. Probability = 0.13 (13%); Expected annual loss = ₦30.0 million
C. Probability = 0.22 (22%); Expected annual loss = ₦42.7 million
Correct Answer D. Probability = 0.17 (17%); Expected annual loss = ₦35.5 million
Correct Answer
D
Correct Option:
Probability = 0.17 (17%); Expected annual loss = ₦35.5 million

About This Question

This is Waec Model Questions Vol1 2019 Geography Question 36. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Geography examination.

Difficulty level: Hard .

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