The Dow Jones Industrial Average (DJIA) and the Standard & Poor's 500 (S&P 500) indexes are used as measures of overall movement in the stock market. The DJIA is based on the price movements of 30 large companies; the S&P 500 is an index composed of 500 stocks. Some say the S&P 500 is a better measure of stock market performance because it is broader based. Suppose the closing price for the DJIA and the S&P 500 for 144 days in a certain year are as provided in the file closingprices3.xlsx. (a) Develop a scatter chart for these data with DJIA as the independent variable. What does the scatter chart indicate about the relationship between DJIA and S&P 500? The scatter chart indicates there may be a positive linear relationship between DJIA and S&P 500. The scatter chart indicates there may be no noticeable linear relationship between DJIA and S&P 500. The scatter chart indicates there may be a negative linear relationship between DJIA and S&P 500. (b) Develop an estimated linear regression equation showing how S&P 500 (y) is related to DJIA (x). What is the estimated linear regression model? (Round your numerical values to four decimal places.) ŷ=b0+b1 x (c) What is the 95% confidence interval for the parameter ₁? (Round your answers to three decimal places.) 0 to 95 Based on this interval, what conclusion can you make about the hypotheses that the parameter ₁ is equal to zero? (Make your conclusion regardless of any validity concerns.) Because this interval does include zero, we reject the hypothesis that ₁ = 0. (d) What is the 95% confidence interval for the parameter Bo? (Round your answers to three decimal places.) to

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,…

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:

The Big Mac index is a way of measuring Purchasing Power Parity (PPP) between different countries. By diverting the average national Big Mac prices to U.S. dollars, the same goods can be informally compared. The Big Mac can also be a good indicator for the individual purchasing power of an economy since he exists worldwide in standard size, composition and quality. Price # of Countries Rel. f. Cum. f 1.50-1.99 2 2.00-2.49 4 2.50-2.99 7 3.00-3.49 9. 3.50-3.99 7 4.00-4.49 8 4.50-4.99 9 5.00-5.49 7 5.50-5.99 1 6.00-6.49 2 6.50-6.99 1 a. What is the statistical name of the table above? b. How many countries were sampled? c. State the class width. d. Calculate the mean and standard deviation of the average prices of a Big Mac worldwide. Attach correct symbols and units to your answers. Explain how you obtained your answers.

The following table shows the price per share of Apple stock at the beginning of different months. Calculate the four-month weighted moving average for October 2021. Round your answer to the nearest cent. Month July 2021 August 2021 September 2021 October 2021 November 2021 December 2021 Apple Stock Price Simple Moving Average Weighted Moving Average $136.60 $146.36 $152.83 $141.90 $148.99 $167.48 ???

Suppose that a firm's sales were $3,750,000 five years ago and are $5,250,000 today. What was the geometric mean growth rate in sales over the past five years?