A company compared the variance of salaries for employees who have been employed for 5 years or less with employees who have been employed for 10
years or more. They randomly selected 21 employees with 5 years or less
experience and 15 employees with 10 years or more experience. The standard
deviation for the group with 5 years or less experience was $2,225, the
standard deviation for the group with 10 years or more experience was
$1.875. Using the 0.05 significance level, what is the critical value for the
hypothesis test?

Which actions can you improve your credit score? (multiple can be selected)having a good credit score should be your prime objective as credit companies analyze your creditworthiness before giving you a loan. there are certain guidelines you can follow to ensure you have a good credit score. always pay your mortgage interest on time. if you are a student, make student loan inquiries before taking any loan. if you have multiple credit cards, manage them judiciously. maintain a healthy balance in your bank account.1. always pay your mortgage interest on time.2. if you are a student, make student loan inquiries before taking any loan.3. if you have multiple credit cards, manage them judiciously.4. maintain a healthy balance in your bank account.

You hold a diversified $100,000 portfolio consisting of 20 stocks with $5,000 invested in each. the portfolio's beta is 1.12. you plan to sell a stock with b = 0.90 and use the proceeds to buy a new stock with b = 1.50. what will the portfolio's new beta be? do not round your intermediate calculations.

In a recent annual report, apple computer reported the following in one of its disclosure notes: "warranty expense: the company provides currently for the estimated cost for product warranties at the time the related revenue is recognized." this note exemplifies apple's use of: (a) conservatism.(b) matching. (c) realization principle. (d) economic entity.