Chapter 7, Problem 7.19AC

You are a financial analyst for a brokerage firm. Is there a difference in dividend yield between stocks listed on the NYSE & NASDAQ? You collect the following data: NYSE NASDAQ Number 20 24 Sample mean 3.5 2.5 Sample std dev 1.30 1.16

Below are the results of a survey of America's best graduate and professional schools.  The top 25 business schools, as determined by reputation, student selectivity, placement success, and graduation rate, are listed in the table.  For each school, three variables were measured: (1) GMAT score for the typical incoming student; (2) student acceptance rate (percentage accepted of all students who applied); and (3) starting salary of the typical graduating student.            School              GMAT    Acc. Rate   Salary Harvard 644         15.0%        $  63,000 Stanford 665         10.2              60,000 Penn 644         19.4              55,000 Northwestern 640         22.6              54,000 MIT 650         21.3              57,000 Chicago 632         30.0              55,269 Duke 630         18.2              53,300 Dartmouth 649         13.4              52,000 Virginia 630         23.0              55,269 Michigan 620         32.4              53.300 Columbia 635         37.1…

3. A Bloomberg Businessweek North American subscriber study collected data from a sample of 2861 sub-scribers. Fifty- nine percent of the respondents indicated an annual income of $ 75,000 or more, and 50% reported having an American Express credit card. a. What is the population of interest in this study? b. Is annual income a categorical or quantitative variable? c. Is ownership of an American Express card a categorical or quantitative variable? d. Does this study involve cross- sectional or time series data? e. Describe any statistical inferences Bloomberg Businessweek might make on the basis of the survey. 4. Table 1.8 shows a data set containing information for 25 of the shadow stocks tracked by the American Association of Individual Investors. Shadow stocks are common stocks of smaller companies that are not closely followed by Wall Street analysts. The data set is also on the website that accompanies the text in the file named Shadow02. a. How many variables are in the data set?…