Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 77 stocks traded on the NYSE that day showed that 28 went up. You are conducting a study to see if the proportion of stocks that went up is is significantly more than 0.3. You use a significance level of a = 0.02. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a Ogreater than a This p-value leads to a decision to... O reject the null accept the null O fail to reject the null As such, the final conclusion is that... O There is sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is more than 0.3. O There is not sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is more than 0.3. O The sample data support the claim that the proportion of stocks that went up is is more than 0.3. Thore is not sufficient sample evidence to support the claim that the proportion of stocks that went up

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?…

Walmart predicted the following end-of-year earnings from 2003 - 2012 in billions of dollars (9.5, 9.8, 10.2, 10.7, 10.5, 11.0, 12.1, 14.7, 16.3, 18.7). Their actual end-of- year earnings for the same years are as follows: 9.1, 9.2, 10.6, 10.3, 9.9, 10.4, 11.6, 11.8, 13.1, 22.7). In testing the claim that the mean predicted value is the same as the mean actual value, which p-value is correct? 0.228 0.456 0.779 0.05 4

State whether the mean, median, mode is being used. a. In 2002,there were as many people aged 25 and younger in the world as there were people age 25 and older. The majority of full time students carry a load of 15 credit hours per semester. The Average annual return on investment is 16.5 percent.

What can you say about the interest ratings of boys and girls for these topics?

5. Market share of electric vehicles rose from 1.13% in 2017 to 2.1% in 2018.(a) What is the increase in market share in percentage points?(b) What is the percent increase in market share?

The table below shows the year open and year closing price of the S&P 500 Stock Index from 2005 to 2020:   Year Year Open Year Close Annual Percent Change 2005  $  1,202.08  $  1,248.29   2006  $  1,268.08  $  1,418.30   2007  $  1,416.60  $  1,468.36   2008  $  1,447.16  $     903.25   2009  $     931.80  $  1,115.10   2010  $  1,132.99  $  1,257.64   2011  $  1,271.87  $  1,257.60   2012  $  1,277.06  $  1,426.19   2013  $  1,462.42  $  1,848.36   2014  $  1,831.98  $  2,058.90   2015  $  2,058.20  $  2,043.94   2016  $  2,012.66  $  2,238.83   2017  $  2,257.83  $  2,673.61   2018  $  2,695.81  $  2,506.85   2019  $  2,510.03  $  3,230.78   2020  $  3,257.85  $  3,756.07     Find the annual percent change for the S&P 500 from 2005 to 2020; (Put those values in the table above)   Compute the mean,…

. Primary Data Source and Secondary Data Source ?

The following information is taken from Johnson & Johnson's annual reports. Its common stock is listed on the New York Stock Exchange, using the symbol JNJ.  Johnson & Johnson   Domestic Sales International Sales Employees Year ($ million) ($ million) (thousands) 2010 $ 29,437   $ 32,124   114.0 2011   12,907     36,107   117.9 2012   29,830     37,394   127.6 2013   31,910     39,402   128.1 2014   34,782     39,548   126.5 2015   35,687     34,387   127.1 2016   37,811     34,079   126.4 2017   39,863     36,587   134.0 2018   41,884     39,697   135.1   Using the period 2010–12 as the base period, compute a simple index of international sales for each year from 2013 to 2018. (Round your answers to 1 decimal place.)The index (2010–2012 = 100) for selected years is:

When you hold the mouse pointer over a point on the graph, the specific value corresponding to that point appears (e.g., “California, 2013 - 19.4%”) as well as a line called “90% Confidence” followed by an range of values.  Generally speaking, what does the range of values denoted by “90% Confidence” indicate?