if you flip a coin 8 times, what is the best prediction possible for the number of times it will land on…
if you flip a coin 8 times, what is the best prediction possible for the number of times it will land on tails? times
Answer
Answer:
4
Explanation:
Step1: Identify probability of tails
For a fair - coin, $P(\text{tails})=\frac{1}{2}$.
Step2: Calculate expected number
The expected value $E(X)=n\times p$, where $n = 8$ (number of flips) and $p=\frac{1}{2}$ (probability of tails). So $E(X)=8\times\frac{1}{2}=4$.