Waec Model Questions Vol1 2022 Geography Question 45

Practice objective / multiple choice question 45 from the 2022 Waec Model Questions Vol1 Geography examination.

Waec Model Questions Vol1 2022 Geography Objective / Multiple Choice Medium Difficulty
Question 45 WAEC_MODEL_QUESTIONS_VOL1 • 2022 • GEOGRAPHY • objective

In a 1 km² savanna, a botanist samples 20 random 10 m × 10 m quadrats. Species A occurs in 8 quadrats, species B in 12 quadrats, and both species occur together in 5 quadrats.\ (a) Estimate the probability that a randomly chosen 10 m × 10 m plot contains at least one of the two species.\ (b) If, in a quadrat where a species is present, it covers on average 30 % of the quadrat area for species A and 20 % for species B, estimate the total area (in hectares) of the savanna covered by each species.

Answer Options

A. Probability = 0.80; Area covered - Species A: 0.030 ha, Species B: 0.022 ha
Correct Answer B. Probability = 0.75; Area covered - Species A: 0.024 ha, Species B: 0.024 ha
C. Probability = 0.70; Area covered - Species A: 0.024 ha, Species B: 0.018 ha
D. Probability = 0.65; Area covered - Species A: 0.018 ha, Species B: 0.020 ha
Correct Answer
B
Correct Option:
Probability = 0.75; Area covered - Species A: 0.024 ha, Species B: 0.024 ha

About This Question

This is Waec Model Questions Vol1 2022 Geography Question 45. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Geography examination.

Difficulty level: Medium .

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