Question: Question 13 - 15 (1 mark each = 3 marks) The weekly salary of employees with the highest salary in a local company is known

Question 13 - 15 (1 mark each = 3 marks)

The weekly salary of employees with the highest salary in a local company is known to be normally distributed, with a mean of $4000 and a standard deviation of $1500.

13. What is the probability that a randomly selected employee has a weekly salary of less than $3000?

A 0.2514

B 0.7486

C 0.7454

D 0.2546

14. Find the maximum weekly salary earned by the lowest 30% of these employees.

A 3205

B 4250

C 2580

D 3220

15. If 9 employees from the company are selected at random, what is the probability that the average salary is more than $5000?

A 0.0228

B 2

c 0.9772

D 0.7486

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