A probability of 1/10 means that you expect one in ten spins to land on 2.
Performing 300 spins is the same as performing 10 spins, 30 times.
You expect to have a 2 every 10 spins, so if you repeat this process 30 times, you expect to have 2 thirty times.
In general, if you know that you have probability of success p, and you repeat the experiment n times, you expect a number of success equal to np.
In this case, p=1/10, n=300, so the expected number of successes is
Answer:
0.5122 or 51.22%
Step-by-step explanation:
In a certain city, in June Probability of cloudy days = P(cloudy) = 0.41
Probability of cloudy and rainy = P(cloudy and rainy) = 0.21
Probability of rainy if we already know it is cloudy =
= = 0.512195122 ≈ 0.5122
Therefore, the probability that a randomly selected day in June will be rainy if it is cloudy is 0.5122 or 51.22%