PART I. HYPOTHESIS TESTING PROBLEM 1 A certain brand of fluorescent light tube was advertised as having an effective life span before burning out of 4000 hours. A random sample of 84 bulbs was burned out with a mean illumination life span of 1870 hours and with a sample standard deviation of 90 hours. Construct a 95 confidence interval based on this sample and be sure to interpret this interval. Answer Since population standard deviation is unknown‚ t distribution can be used construct
Premium Statistics Statistical hypothesis testing Sample size
COURSE : ECONOMICS EXAMINATION : APRIL 2011 QUESTION 1 A) What is market equilibrium? With the aid of a diagram‚ explain how it is determined? (4marks) Answer: Market equilibrium is a situation in which the supply curve of an item is exactly equal to its demand curve. Since there is neither surplus nor shortage in the market‚ price tends to remain stable in this situation. Price D S E P S D 0 Q
Premium Supply and demand
Updated March 2011 DNA‚ RNA structure and function Why are multiple copies of tRNA and rRNA genes needed? a. These RNAs are destroyed very rapidly. b. These RNAs are very stable. c. These RNAs are needed in large amounts. d. These RNAs do not benefit from the extra amplification step that occurs for protein-encoding genes. e. c and d If you treat mitotic chromosomes with solutions that extract histones‚ what happens? a. The chromosomes become more condensed
Premium DNA Gene RNA
Revenues measure the inflow of net assets resulting from selling products or services. Failure to adjust for depreciation results in the overstatement of assets and the understatement of net income. (FALSE). Which of the following transactions would not affect owners’equity? Purchasing supplies for cash. Increased earnings do not always generate an increase in cash flow. CFO includes: selling goods‚ not: buildings‚ dividends‚ long-term debt. Depreciation reduces net income but is not related to a
Premium Generally Accepted Accounting Principles Finance Economics
$500? Explain. Price will rise by less than $500. The only way price could rise by exactly $500 is if demand (or supply) is perfectly inelastic. 2. The FICA tax funds Social Security programs. Congress established a 15.3% FICA tax rate; by law‚ the tax burden is split 50-50 between employer and employee. So‚ 7.65% of the employee’s earnings on each paycheck is deducted for FICA taxes‚ and 7.65% of the employee’s earnings is paid in FICA taxes by the employer. Is the economic incidence
Premium Price Consumer theory Supply and demand
94 D. .92 E. .38 Answer: D 2. Suppose that for a certain football game the probability that the home team will be ahead at half-time is 0.60 and the probability that the home team will be ahead at half- time as well as at the final gun is 0.45. What is the probability that the home team will win this game given that it is ahead at the half? A. .45 B. .75 C. .15 D. .27 E. None of the above. Answer: B 3. A company markets two products
Premium Probability theory Regression analysis Function
Question 1: (1) Ten multiple choice questions. When a firm’s investment decisions have different consequences for the value of equity and the value of debt‚ managers may take actions A) that benefit shareholders at the expense of debt holders. B) to decrease costs of distress. C) to reduce fixed costs. D) to increase debt values. (2) Which of the following is NOT an advantage of private debt over public debt? A) B) C) D) It does not dilute the ownership of the firm. It has to have interest
Premium Stock Stock market Bond
question (30 points). You have two hours to complete the exam. It is on one page. The TCO’s covered on the exam are: Everything we cover in Weeks 1 – 3 is fair game on the midterm. You can only take the midterm one time – and once you start‚ the time will begin running. The exam is pooled so you will all have a different random selection of questions. Terms to study for readying yourself to take the midterm: • Model Employment Termination Act • Injunctions • Independent contractor •
Free Employment Discrimination Affirmative action
Family name: Student number: Signature: 76 29 D rI eUNIVERSITY OF TORONTO ad lo Faculty of Arts and Science n ow D ID: 6639 ECO206Y1Y (Microeconomic Theory) Instructor: Victor Couture and Rebecca Lindstrom Item Final Examination August 2011 9 Duration: 180 minutes (3 hours) 63 6 D mI Examinations Aids: te Non-Programmable Calculators I This examination paper consists of 16 pages and 8 questions. Please bring any discrepancy to the attention of
Free Utility Consumer theory Supply and demand
DO YOU FAVOUR FOR MEASURING CHILDREN’S PROGGRES – FINAL EXAMS OR CONTINUOUS ASSESSMENTS? In many schools‚ students’ studies are evaluated by final examinations‚ while‚ in many other schools‚ students’ studies are assessed by continuous tests during the school year. I believe that continuous assessment is more useful‚ but final exams are also needed. Continuous tests during the school year do not put students under as great a pressure as final examinations at the end of each semester. For continuous
Premium Education Learning School terminology