We are interested in determining whether or not the variances of the sales at two music stores (a and b) are equal. a sample of 26 days of sales at store a has a sample standard deviation of 30 while a sample of 16 days of sales from store b has a sample standard deviation of 20. 17. refer to exhibit 11-2. the test statistic is a. 1.50 b. 0.67 c. 1.56 d. 2.25 18. refer to exhibit 11-2. the p-value for this test is a. between 0.05 and 0.10 b. between 0.10 and 0.2 c. between 0.2 and 0.3 d. none of these alternatives is correct. 19. refer to exhibit 1 1-2 at 95% confidence the null hypothesis a. should be rejected b. should not be rejected c. should be revised d. none of these alternatives is correct.

Last year, western corporation had sales of $5 million, cost of goods sold of $3 million, operating expenses of $175,000 and depreciation of $125,000. the firm received $40,000 in dividend income and paid $200,000 in interest on loans. also, western sold stock during the year, receiving a $40,000 gain on stock owned 6 years, but losing $60,000 on stock owned 4 years. what is the firm's tax liability?

Ajustification for job training programs is that they improve worker productivity. suppose that you are asked to evaluate whether more job training makes workers more productive. however, rather than having data on individual workers, you have access to data on manufacturing firms in ohio. in particu- lar, for each firm, you have information on hours of job training per worker (training) and number of nondefective items produced per worker hour (output). (i) carefully state the ceteris paribus thought experiment underlying this policy question. (ii) does it seem likely that a firm’s decision to train its workers will be independent of worker characteristics? what are some of those measurable and unmeasurable worker characteristics? (iii) name a factor other than worker characteristics that can affect worker productivity. (iv) if you find a positive correlation between output and training, would you have convincingly established that job training makes workers more productive? explain.

The hartman family is saving $400 monthly for ronald's college education. the family anticipates they will need to contribute $20,000 towards his first year of college, which is in 4 years .which best explain s whether the family will have enough money in 4 years ?