Stating null and alternative hypotheses

Reference no: EM1316445

In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older individuals. In order to determine whether there has been an increase in the average age of all the employees, a sample of 64 employees was selected. The average age in the sample was 45 years with a standard deviation of 16 years. Let = 0.5

a. State the null and the alternative hypotheses.

b. Compute the test statistics.

c. Using the p-value approach, test to determine whether or not the mean age of all employees is significantly more than 40 years.

Reference no: EM1316445

Questions Cloud

Find the probability using hypergeometric distribution : Find the probability that 4 of the 5 committee members belong to a union.Find the probability using hypergeometric distribution.

Increasing and decreasing intervals : Increasing and decreasing intervals.

Length of stay of workers at the company differs : Can we compute the mean length of stay of workers at the company differs from the mean length of stay at that dangerous industry.

Computation of yield on bond with given data : Computation of yield on bond with given data and what is the yield on a 7-year bond for Drongo Corporation

Stating null and alternative hypotheses : State the null and the alternative hypotheses. Using the p-value approach, test to determine whether or not the mean age of all employees is significantly more than 40 years.

Deciding about factory lease and quantity of output : Suppose the firm decided to lease the large factory, and has put down a non-refundable deposit of 4,000 for that factory. Provide a recommendation concerning which factory firm should lease, and the number of boxes of chalk it should produce.

The ceo of the business has nothing better to do : The CEO of the business has nothing better to do wheras measured the temperatures of 26 department managers 1 to 4 times every day to get a total of 123 measurements.

Calculating the first derivative and critical point : Calculating the first derivative and critical point.

Presume that a highly liquid market does not exist for long : Presume that a highly liquid market does not exist for long-term T-bonds and and the expected rate of inflation is a constant

User Account

All Pages