if you flip a coin 12 times, what is the best prediction possible for the number of times it will land on…
if you flip a coin 12 times, what is the best prediction possible for the number of times it will land on heads? times
Answer
Explanation:
Step1: Determine probability of heads
The probability of getting heads in a single - coin flip is $p=\frac{1}{2}$.
Step2: Calculate expected value
The expected value $E(X)$ of the number of heads in $n = 12$ coin - flips is given by $E(X)=n\times p$. Substitute $n = 12$ and $p=\frac{1}{2}$ into the formula: $E(X)=12\times\frac{1}{2}$. $E(X) = 6$.
Answer:
6