if you flip a coin 10 times, what is the best prediction possible for the number of times it will land on…
if you flip a coin 10 times, what is the best prediction possible for the number of times it will land on heads? times
Answer
Explanation:
Step1: Identify probability of heads
The probability of getting heads in a single fair - coin flip is $p=\frac{1}{2}$.
Step2: Use expected - value formula
The expected value $E(X)$ of a binomial distribution $X\sim B(n,p)$ (where $n$ is the number of trials and $p$ is the probability of success in a single trial) is given by $E(X)=n\times p$. Here, $n = 10$ (number of coin flips) and $p=\frac{1}{2}$. So, $E(X)=10\times\frac{1}{2}$.
Answer:
5