Mathematics, 12.01.2021 05:00 mairadua14
To celebrate the opening of a new store, when a customer gets to the register, they get to spin a prize
wheel that is equally divided into 4 parts. Depending on what part the customer lands on, they win either
a 10%, 20%, 30%, or 50% discount on their entire purchase.
a) What is the probability that the first customer to win a 50% discount is the Sth customer to get to the
register?
b) What is the probability that at least 3 of the first 5 customers win a discount of at least 30%?
I
c) At the end of the day, the records show that 140 customers made a purchase at the store that day.
What are the mean and standard deviation of the number of customers who won a discount of at
least 30%?
Answers: 3
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