Answer to Question #154192 in Statistics and Probability for hajir

Question

The annual salaries of employees in a large company are approximately normally distributed with a mean of $70,000 and a standard deviation of $30,000.

a)              What is the probability that an employee earns a salary greater than $90,000?

Formula:

b)             The company provides free Child care to the employees with kids up to 5 years of age that earn the lowest 15% of salaries. What salary does a person have to earn less than, to qualify for the free child care?

Formula:

c)              A sample of 20 employees is now taken. What is the probability that the sample mean is greater than $60,000?

                        Formula:         

Answer 1

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