Question

The probability that is will rain tomorrow is 0.8
What is the probability that it will not rain tomorrow ?​

Answer 1

SOLUTION

GIVEN

The probability that is will rain tomorrow is 0.8

TO DETERMINE

The probability that it will not rain tomorrow

CONCEPT TO BE IMPLEMENTED

Probability

In any random experiment if the total number of elementary ( simple) events in the sample space be n ( a finite number) among which the number of elementary events favourable to an event A, connected with the experiment be m then the probability of the event A is denoted by P (A) and defined as

$\displaystyle \sf{}P(A) = \frac{m}{n}$

EVALUATION

Let A be the event that it will rain tomorrow

Here it is given that probability that is will rain tomorrow is 0.8

P(A) = 0.8

So the required probability that it will not rain tomorrow

$\sf{ = P( \bar{A})}$

$\sf{ = 1 - P(A) }$

$\sf{ = 1 - 0.8}$

$= 0.2$

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