if you flip two coins 80 times, what is the best prediction possible for the number of times both coins will…
if you flip two coins 80 times, what is the best prediction possible for the number of times both coins will land on tails? times
Answer
Answer:
20
Explanation:
Step1: Calculate probability of two - tails
The probability of getting tails on one coin flip is $\frac{1}{2}$. For two independent coin - flips, the probability of both landing on tails is $\frac{1}{2}\times\frac{1}{2}=\frac{1}{4}$.
Step2: Calculate expected number
We flip the two - coin set 80 times. The expected number of times both coins land on tails is the probability of both - tails times the number of trials. So, $80\times\frac{1}{4}=20$.