Question

Jasmine is packing her bag for a four-day music festival. The weather forecast for each of the days states that the probability of rain is a constant value of 30%. Find the probability that it will rain on at least two of the four days.

Answer 1

The probability that it will rain for a particular day is 30 % .

Calculating the individual probabilities ,

`\begin{gathered} P(\text{ two days ) = }2\text{ }*\text{ 30 = 60 \%} \\ \text{ } \\ \end{gathered}`

The required probability is calculated as ,

`\text{Required probability = }\frac{60\text{ }}{100}\text{ = 0.60 }`

Thus the probability that it rains for atleast 2 days is 0.60 .