if you spin the spinner 10 times, what is the best prediction possible for the number of times it will not…
if you spin the spinner 10 times, what is the best prediction possible for the number of times it will not land on pink? times
Answer
Explanation:
Step1: Estimate probability of not - pink
Assume the spinner has 5 equal - sized sections and 2 are pink. So the probability of landing on pink is $P(\text{pink})=\frac{2}{5}$, and the probability of not landing on pink is $P(\text{not pink}) = 1-\frac{2}{5}=\frac{3}{5}$.
Step2: Calculate the expected number
Multiply the number of spins by the probability of not landing on pink. The number of spins $n = 10$, and the expected number of times not landing on pink $E=n\times P(\text{not pink})=10\times\frac{3}{5}$. $10\times\frac{3}{5}=6$.
Answer:
6