Question

From the table below, plot the probability distribution graph of rainfall in a city. The probability of rainfall occuring in April is

• A. 0.2
• B. 0.25
• C. 0.1

Answer 1

The correct option is B 0.25


Plotting the distribution graph from the table, we see:

From the graph, we observe that:

Month	Average amount of rainfall	p(x)
January	110 inches	$\frac{110}{440}=\frac{1}{4}=0.25$
February	110 inches	$\frac{110}{440}=\frac{1}{4}=0.25$
March	110 inches	$\frac{110}{440}=\frac{1}{4}=0.25$
April	110 inches	$\frac{110}{440}=\frac{1}{4}=0.25$

So, the probability of rainfall in April is 0.25