if you flip a coin 54 times, what is the best prediction possible for the number of times it will land on…
if you flip a coin 54 times, what is the best prediction possible for the number of times it will land on tails? times
Answer
Explanation:
Step1: Determine probability of tails
The probability of getting tails in a single fair - coin flip is $p=\frac{1}{2}$.
Step2: Calculate expected number of tails
The expected value $E(X)$ of the number of tails in $n = 54$ flips is given by $E(X)=n\times p$. Substitute $n = 54$ and $p=\frac{1}{2}$ into the formula: $E(X)=54\times\frac{1}{2}$. $E(X) = 27$.
Answer:
27