PLZ HELP!!!! Predict the number of times you will win a prize in 500 spins, based on the theoretical probability.
2 answers:
Answer: Second option is correct.
Step-by-step explanation:
Since we have given that
Total number of sectors in a wheel = 10
Number of sectors for win a prize = 3
So, Probability of getting for win a prize is given by
Number of times it spins = 500
so, the number of times that you will win a prize is given by
Hence, Second option is correct.
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Answer:
95.15%
Step-by-step explanation:
We have that the mean (m) is equal to 20, the standard deviation (sd) 3
They ask us for P (x <25)
For this, the first thing is to calculate z, which is given by the following equation:
z = (x - m) / sd
We have all these values, replacing we have:
z = (25 - 20) / (3)
z = 1.66
With the normal distribution table (attached), we have that at that value, the probability is:
P (z <1.66) = 0.9515
Which means that the probability that it arrives before 25 minutes is 95.15%
