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Question 9 # 1,2 and question 7 # 1,2 ( explain with calculations all of the numbers for better understanding) Question 9 (4 points) 10

Question 9 # 1,2 and question 7 # 1,2 ( explain with calculations all of the numbers for better understanding)

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Question 9 (4 points) 10 customers were randomly selected from ABC's accounts receivable portfolio which has 3000 customers. If 60% of the customers in the portfolio are from the United States, 1. What is the probability that exactly 7 of the 10 customers selected are om the United States? (2 Points) 2. What is the probability that at most 5 of the 10 customers selected are from the United States? (2 Points) Question 7 (4 points) The average age of visitors to a community fair is 32.5 years with a standard deviation of 4.5 years. It is known that the age of the visitors follows a normal distribution. 1. What is the probability that a randomly selected visitor is older than 36 years old? (2 Points) 2. Fill in the blank: 18% of the visitor are older than years? (2 Points)

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