(a)[1]
Ali keeps a log of the computer games he plays. In the first $6$ games, Ali wins $4$. In the first $20$ games, Ali wins $13$. Use these results to find the best estimate for the probability that Ali will not win the next computer game he plays.
(b)[2]
A spinner is spun $n$ times, and it lands on red $14$ times. The relative frequency for the spinner landing on red is $0.2$. Find the value of $n$.