you select a marble without looking and then put it back. if you do this 8 times, what is the best…
you select a marble without looking and then put it back. if you do this 8 times, what is the best prediction possible for the number of times you will pick an orange marble? times
Answer
Explanation:
Step1: Calculate total marbles
There are 3 green and 5 purple marbles, so $3 + 5=8$ marbles in total.
Step2: Calculate probability of picking orange
Since there are 0 orange marbles, the probability $P=\frac{0}{8}=0$.
Step3: Predict number of times
We do the experiment 8 times. The expected - value formula is $E = n\times P$, where $n = 8$ and $P = 0$. So $E=8\times0 = 0$.
Answer:
0