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- The following table 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. How many variables are in the data set? Which of the variables are categorical and which are quantitative? For the Exchange variable, show the frequency and the percent frequency for AMEX, NYSE, and OTC. Construct a bar graph similar to Figure 1.4 (in the textbook) for the Exchange variable. Show the frequency distribution for the Gross Profit Margin using he five intervals: 0 – 14.9, 15 – 29.9, 30 – 44.9, 45 – 59.9, and 60 – 74.9. Construct a histogram similar to Figure 1.5 (in the textbook). What is the average price/earnings ratio? DATA SET FOR 25 SHADOW STOCKS Company Exchange Ticker Symbol Market Cap ($ millions) Price/ Earnings Ratio Gross Profit Margin (%) DeWolfe Companies AMEX DWL 36.4…1. A recent survey of INTO Newcastle University students showed that 65% own aniPhone, 75% have a Casio fx-83 calculator and 10% have neither.a. Find the percentage of students who have both an iPhone and a calculator. b. In the space below, draw a Venn Diagram to represent this information.a) A C-chart is to be constructed for the count of surface defects in 2000 square meters of 40-kg Kraft paper. If 55 lots had a total of 550 defects. Determine the trial central line and control limits.b) An (np) chart is to be established on a painting process that is in statistical control. If 60 pieces are to be inspected every 3 hours and the fraction non-conforming is 0.06, determine the central line and control limits
- If a study determines the difference in average salary for subpopulations of mechanical engineers and civil engineers is NOT significant, then the subpopulations of mechanical and civil engineers are ________ different salaries. Guaranteed not to be earning 2.Earning very 3.Definitely earning 4.0Not earningThe scale characterized by the classification of events, objects, or persons into mutually exclusive categories and whose only mathematical relationship are those of equivalence and nonequivalence is called:1.The head of the production department of a RM Electronic Company wants to determine the relationship between the number of workers who assemble the product and the number of units assembled per day. How many workers is needed to produce 1000 units per day?
- 11.1 The table showing the stock price changes for a sample of 12 companies on a day is contained in the Excel Online file below. Construct a spreadsheet to answer the following questions. Company Price Change ($) Aflac 0.79 Bank of Am. 1.44 Cablevision -0.05 Diageo 0.93 Fluor Cp 0.42 Goodrich 0.20 John.&John. 1.33 Loews Cp 0.98 Nokia 2.36 SmpraEngy 0.51 Sunoco 0.29 Tyson Food 0.13 Open spreadsheet a. Compute the sample variance for the daily price change (to 4 decimals). b. Compute the sample standard deviation for the price change (to 4 decimals). c. Provide 95% confidence interval estimates of the population variance (to 4 decimals). _____<=Sigma^2<=______ d. Provide 95% confidence interval estimates of the population standard deviation (to 4 decimals). _____<=Sigma<=______Consider the market depicted in the graph and assume the government imposes a price floor of P2. At P2, 150 units of the good are supplied (wish to be sold) and 50 units of the good are demanded (wish to be bought). Choose the correct ones: Without an enforcement mechanism, the effect of a binding price floor will be negligible because it will simply be ignored because buyers and sellers enrich themselves by trading below the floor price. With an enforcement mechanism, the effect of a binding price floor may still be negligible if the enforcement mechanism is easy to evade or doesn't impose a significant penalty for selling below the price floor. Without an enforcement mechanism, the effect of a binding price floor will be negligible because it will simply be ignored because buyers and sellers enrich themselves by trading above the floor price. With an enforcement mechanism, the effect of a binding price floor may still be negligible if the enforcement mechanism is easy to evade or…3.6 With the increase in the mobility of the population in the United States and with the increasein home-based employment, there is an inclination to assume that the personal income in theUnited States will become fairly uniform across the country. The following table provides the percapita personal income for each of the 50 states and the District of Columbia.Income(thousands of dollars) Number of States22.0–24.9 525.0–27 .9 1328.0–30.9 1631.0–33.9 934.0–36.9 437 .0–39.9 240.0–42.9 2 Total 51 a. Construct a relative frequency histogram for the income data.b. Describe the shape of the histogram using the standard terminology ofhistograms.c. Would you describe per capita income as being fairly homogenous across…
- 1. The shares of the U.S. automobile market held in 1990 by General Motors, Japanese manufacturers, Ford, Chrysler, and other manufacturers were, respectively, 37%, 20%, 22%, 12%, and 9%. Suppose that a new survey of 1,000 new-car buyers shows the following purchase frequencies:6.6 The Department of Natural Resources (DNR) received a complaint from recreational fish- ermen that a community was releasing sewage into the river where they fished. These types of releases lower the level of dissolved oxygen in the river and hence cause damage to the fish resid- ing in the river. An inspector from the DNR designs a study to investigate the fishermen’s claim. Fifteen water samples are selected at locations on the river upstream from the community and fifteen samples are selected downstream from the community. The dissolved oxygen readings in parts per million (ppm) are given in the following table. Upstream 5.2 4.8 5.1 5.0 4.9 4.8 5.0 4.7 4.7 5.0 4.6 5.2 5.0 4.9 4.7 Downstream 3.2 3.4 3.7 3.9 3.6 3.8 3.9 3.6 4.1 3.3 4.5 3.7 3.9 3.8 3.7 a. In order for the discharge to have an impact on fish health, there needs to be at least an .5 ppm reduction in the dissolved oxygen. Do the data provide sufficient evidence that there is a large enough reduction in the mean…A company that sells digital devices has its stores in several cities in Albania. The Marketing Manager plans to transmite an advertisement for the digital camera product on local television and watch sales of that product, to see the link that exists with the number of ads transmitted and product sales. After two days, the results were presented in the following table: City Trasmitted Sales(in 000 Euro) Durrës 4 15 Sarandë 2 8 Fier 5 21 Berat 6 24 Lezhë 3 17 S S = 1.58 S = 6.1 a) What is the dependent variable?b) Construct the scatterdiagram of this connection.c) Calculate the coefficient of variation and the coefficient of determination.d) Interpret the relationship between two variables.e) What is the equation that connects these two variables? Explain the values for a and b.f) What is the expected level of sales if 10 ads are trasmitted