Suppose 49 percent of the customers at Pizza Palooza order a square pizza, 71 percent order a soft drink, and 38 percent order both a square pizza and a soft drink. Is ordering a soft drink independent of ordering a square pizza? O Yes O No
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Q: Suppose 59 percent of the customers at Pizza Palooza order a square pizza, 73 percent order a soft…
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Q: Suppose 60 percent of the customers at pizza palooza order a square pizza, 70 percent order a soft…
A: Two events A and B are said to be independent, if P(A and B) = P(A)P(B).
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Q: Suppose 50 percent of the customers at Pizza Palooza order a square pizza, 70 percent order a soft…
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A: C= 49% L=36.6% We have to find out : P(c) P(c/L) P(c and L)
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Q: Suppose 50 percent of the customers at Pizza Palooza order a square pizza, 70 percent order a soft…
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- Percentages of public school students in fourth and eighth grades who were above the proficiency level were given for 8 western states 4th Grade Proficiency 8th Grade Proficiency Arizona 15 21 California 11 18 Hawaii 16 16 Montana 22 37 New Mexico 13 13 Oregon 21 32 Utah 23 26 Wyoming 19 25 Construct a scatterplot and comment on any interesting characteristics Find the least squares equation. If Nevada had a 4th grade proficiency of 14%, what would you expect the 8th grade proficiency to be?3. Using the following table, perform ALL FIVE of the techniques for Decision Making under Uncertainty: Maximax, Maximin, Hurwicz Realism (α = 0.4), LaPlace and Minimax Regret. You must show your work for obtaining the points. SIZE OF FIRST STATION GOOD MARKET FAIR MARKET POOR MARKET ($) ($) ($) Small 50,000 20,000 -10,000 Medium 80,000 30,000 -20,000 Large 100,000 30,000 -40,000 Very large 300,000 25,000 -160,000Question4: The simplex table obtained from an enterprise that produces three products under three constraints: machine hours, raw materials and meeting demand is given.Write down the primary and binary results and how the conclusion was reached.X₁ = ?X₂ = ?X₃ = ?S₁ = ?S₂ = ?S₃ = ?L₁ = ?L₂ = ?
- 1. In the context of the paper by Hasanhodzic and Lo (2007), how do the authors account for the fact that hedge fund managers’ skill cannot be replicated. a) They impose that all the βs are equal to zero b) They conduct parameter stability tests c) They estimate the model with no intercept d) They test for heteroskedasticity 2. In the paper by Gatev, Goetzmann and Rouwenhorst (2006), what is the null hypothesis in the t-test on strategy returns? a) Expected (excess) returns of the strategy are zero b) Returns of the strategy are nonstationary c) (Excess) returns of the strategy are zero d) Returns of the strategy are serially correlatedA gardener is interested in seeing if sunlight and fertilizer type interact so that the effect of fertilizer type depends on the amount of sunlight that plants receive. The gardener randomly assigns half of the plants to be in sunlight and half the plants to be in shade. The gardener also randomly assigns half of the plants to receive the new fertilizer and half to receive an old fertilizer. After a month, the gardener measures plant height. 1 What hypothesis test would be most appropriate for answering this research question and why? 2 What are the independent and dependent variables (if any)? 3 How many levels do the independent variable(s) have?In winter of a country, it rains 45% of the days and shine 55% of the days. Mr. X has abarometer which wrongly predicts 5% of the time in rainy days and 10% on shiny days.Mr. X does not carry umbrella if barometer predicts shine. On good shiny morning inwinter, his barometer predicts “shine” and he does not carry umbrella. What is theprobability that Mr. X will suffer from rain on that day.
- Zap Media is a major video distributor that purchases blank DVDs from two sources: Media Makers, which provides 64% of the DVDs and Disk Supply, which provides the remaining 36%. Historically, 4.3% of the DVDs Zap Media has purchased from Media Makers have been defective, whereas 7.7% of the DVDs purchased from Disk Supply have been defective. Use this information and a theoretical group of 10,000 blank DVDs to construct a table for this purchasing scenario. Round all answers and results to four decimal places.Jointsoft is a great over-the-counter arthritis medication, but who will ever know about it? Unfortunately, many people with arthritis tend to be elderly and rather immobile, so advertisers of arthritis medications face limitations in ways to get their messages across. Currently, their best modes of advertisement are commercials on daytime TV, advertisements in select magazines, fliers in convalescent homes, and advertisements on certain Web pages. Marketing managers for Jointsoft are investigating these four modes of advertisement in four small communities (with a different mode of advertisement in each community). The marketing managers have selected 38 days at random and are looking at the daily sales (in dollars) in each of the communities on each of these days. Here is what they have to work with. Groups Sample size Sample mean Sample variance TV 38 573.0 1777.7 Magazines 38 554.3 2761.0 Fliers 38 584.0 2445.4 Web pages 38 587.3 2943.2Jointsoft is a great over-the-counter arthritis medication, but who will ever know about it? Unfortunately, many people with arthritis tend to be elderly and rather immobile, so advertisers of arthritis medications face limitations in ways to get their messages across. Currently, their best modes of advertisement are commercials on daytime TV, advertisements in select magazines, fliers in convalescent homes, and advertisements on certain Web pages. Marketing managers for Jointsoft are investigating these four modes of advertisement in four small communities (with a different mode of advertisement in each community). The marketing managers have selected 33 days at random and are looking at the daily sales (in dollars) in each of the communities on each of these days. Here is what they have to work with.
- Data produced by the government are often available free or at low cost to private users. For example, satellite weather data produced by the U.S. National Weather Service are available free to TV stations for their weather reports and to anyone on the web. Opinion 1: Government data should be available to everyone at minimal cost. European governments, on the other hand, charge TV stations for weather data. Opinion 2: The satellites are expensive, and the TV stations are making a profit from their weather services, so they should share the cost. Place each reason given into the box of the opinion it supports. You are currently in a sorting module. Turn off browse mode or quick nav, Tab to items, Space or Enter to pick up, Tab to move, Space or Enter to drop. Opinion 1 Opinion 2In 2015, the Phoenix/Zweig Advisors Zweig Total Return fund (ZTR) was expected to yield 5% and the Madison Asset Management Madison Strategic Sector Premium fund (MSP) was expected to yield 7%. You would like to invest a total of up to $60,000 and earn at least $3,500 in interest. Draw the feasible region that shows how much money you can invest in each fund (based on the given yields). Find the corner points of the region. Make sure you use a test point in your work. Shade the region(s) that is NOT the solution and label the region SOLUTION SET.You solve a non-singular system of 10,000 linear equations with 10,000 unknowns using the Gauss-Jordan algorithm without pivoting with single precision numbers and arithmetics on a computer that natively can do single precision operations very fast, but can operate in double and half precision as well. Your solution has a residual infinity-norm that is unacceptably large. In which order should you apply the following strategies to lower the residual norm? If a strategy is not / no longer helpful, do not list it as an option. a) use half precision numbers and arithmetics instead of single precision;b) use double precision numbers and arithmetics instead of single precision; c) use partial pivoting;d) use pivoting when encountering a zero in the pivot position.