Question

On a biased dice the probability of getting a 1 is 0.3.
The dice is rolled 150 times.
How many ones would you expect to roll?

Answer 1

Answer:

the probability is 45..............

Answer 2

45 times ones would you expect to roll.

Step-by-step explanation:

Given data

• Total number of outcomes = 150 times

        Probability of getting 1 = 0.3

        Favourable outcome of getting 1 = X = Unknown

• We know the formula of probability, which are given below

        $\mathbf{Probability =\frac{\textrm{Total number of favourable outcome}}{\textrm{Total number of outcomes}}}$

• Means

        $\mathbf{Probability =\frac{\textrm{Total number of favourable outcome of getting 1}}{\textrm{Total number of outcomes}}}$

• On putting respective value in above equation

        $\mathbf{0.3=\frac{X}{150}}$

• X = 0.3×150 = 45= This is expected number of times 1 roll