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Posted: **Sun Sep 05, 2021 5:05 pm**

: Question 1 10 Marks A Big It Company Has Many Branches Around The World Suppose That The Average Number Of Customers 1 (28.26 KiB) Viewed 60 times

Question 1 (10 marks) A big IT company has many branches around the world. Suppose that the average number of customers for all company branches is 120 per day with a standard deviation of 25. If we took a sample of 25 branches, calculate the following probabilities when the number of customers is normally distributed
3. What is the probability that the average number of customers is more than 110? (2.5 marks)
THE NORMAL DISTRIBUTION FUNCTION If Z has a normal distribution with mean 0 and variance I then, for each value of z, the table gives the value of 0(2), where 0(z) = P(Z