Question

Miss Osborne has a 30% chance of randomly drawing a blue marble from a bag. If she does the randomdrawing 50 times, how many times can she expect to get a blue marble?P(G) =

Answer 1

Let:

n = number of times she draws a marble

a = chance of randomly drawing a blue marble

so:

$\begin{gathered} P(G)=a\cdot n \\ where\colon \\ a=0.3 \\ n=50 \\ P(G)=0.3\cdot50=15 \end{gathered}$

Answer:

15 times