The manufacturer of a certain engine treatment claims that if you add their product to your engine, it will be protected from excessive wear. an infomercial claims that a woman drove 6 hours without oil, to the engine treatment. a magazine tested engines in which they added the treatment to the motor oil, ran the engines, drained the oil, and then determined the time until the engines seized. complete parts (a) and (b) below. (a) determine the null and alternative hypotheses that the magazine will test. upper h 0: mu equals 6 upper h 1: mu less than 6 (b) both engines took exactly 11 minutes to seize. what conclusion might the magazine make based on this evidence? a. the infomercial's claim is not true. b. the infomercial's claim is true.

The next dividend payment by savitz, inc., will be $2.08 per share. the dividends are anticipated to maintain a growth rate of 6 percent forever. if the stock currently sells for $42 per share, what is the required return?

For each of the following users of financial accounting information and managerial accounting information, specify whether the user would primarily use financial accounting information or managerial accounting information or both: 1. sec examiner 2. bookkeeping department 3. division controller 4. external auditor (public accounting firm) 5. loan officer at the company's bank 6. state tax agency auditor 7. board of directors 8. manager of the service department 9. wall street analyst 10. internal auditor 11. potential investors 12, current stockholders 13. reporter from the wall street journal 14. regional division managers

Alarge university wanted to study the relationship between completing an internship during college and students' future earning potential. prom the same graduating class, they selected a random sample of 80 students who completed an internship and 100 students who did not complete an internship and examined their salaries five years after graduation. they found that there was a statistically higher mean salary for the internship group than for the noninternship group. which of the following interpretations is the most appropriate? a. there could be a confounding variable, such as student major, that explains the difference in mean salary between the internship and no internship groups. b. we cannot infer anything from these data since the distribution of salaries is likely right skewed. c. you cannot draw any valid conclusions because the sample sizes are different. d. more students should complete internships because having an internship produces a higher salary.