Suppose it is revealed that students who achieve academic success (e, high grades) tend, on average, to drink more coffee per day than those who are less t some students conclude that they should therefore drink coffee whenever possible, they will likely have OA mistaken correlation for causality OB. avoided the fallacy, after this therefore because of this." OC. understood that the two behaviours are jointly caused by some third variable OD. discovered the magic of caffeine
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- E CENGAGE MINDTAP Adaptive Test Prep (Ch 01) Question 3: In the graph below, as the relationship between the variables X and Y is: 40 30 C D 10 10 20 30 40 X value direct. O undefined. O independent. inverse. 20 Y valueBased on some careful market analysis you have hypothesised that the demand for breakfast cereal can be modeled as where Y is the monthly consumption of cereal for a family of four, X1 is the price of cereal per Kg.X2 is the family income and X3 is the price of eggs per dozen. You have arandom sample of 200 families which contains measurements of the variable for each family. Explain how you wuld determine the effect of the price of eggs on the sales of breakfast cereal given the effects of family income and the price of breakfast cereal given the effects of family income and the price of breakfast cereal.New Lottery (Continue): Select an appropriate response What is the best pricing approach for the entity that sells this lottery tickets. O Let people bid on the tickets. O Price the ticket to be sightly more than the mean winning amount OStop seling people are alvays winning. O Price the ticket to be slightly less than the mean winning amount.
- Question 2 Suppose we are interested in the effect of attending a particular school on students’ income in adulthood. Let malei be a dummy variable which is equal to 1 if student i is male. Translate the following mathematical expression into plain English E(Yi(1) − Yi(0)|malei = 1). Full explain this question and text typing work only We should answer our question within 2 hours takes more time then we will reduce Rating Dont ignore this line .Why does dependent variables must covariate in the multivariate analyses like MANOVA/MANCOVA? What happens if they don't covariate, will you be able to proceed in multivariate analyses?13. The government wishes to model the number of calls made to a particular citizen's advice helpline. Over the last month they estimate that there have been on average 1.8 calls/hour. What distribution would be best to model this random variable? O Normal Distribution O Poisson Distribution O Binomial Distribution O Uniform Distribution O T-Distribution
- In 2009 the Organization for Economic Cooperation andDevelopment (OECD) conducted a study of 34 membercountries called the Programme for International StudentAssessment (PISA). The OECD looked at reading scores among 15-year-olds in each country as well as the stu-dents’ socioeconomic backgrounds. PISA reported that higher socioeconomic status was associated with higher reading scores, with their socioeconomic index explain-ing 14% of the variability in reading scores. (Source: Sahlberg, Pasi, “A Model Lesson: FinlandShows Us What Equal Opportunity Looks Like,”American Educator Spring 2012: 25.)Which of the following can be correctly concluded fromthis information?A) For every additional point in the mean reading scorein an OECD country, the PISA socioeconomic indexis expected to increase by 14% on average.B) For every additional one percent increase in the PISAsocioeconomic index, the mean reading score isexpected to increase by 14% on average.C) If the U.S. government wants to…Pisa Pizza, a seller of frozen pizza, is considering introducting a healthier version of its pizza that will be low in cholesterol and contain no trans fats. The firm expects that sales of new pizza will be $20 million per year. While many of these sales will be to new customers, Pisa Pizza estimaes that 40% will come from customers who switch to the new, healthier pizzai nstead of buying the original version. a) Assume cusotmer will spend the same amount on either version. What level of incremental sales is associated with introducing the new pizza? b) Suppose that 50% of hte cusomters who will switch from Pisa Pizza's orignial pizza to its healthier pizza will switch to another brand if Pisa PIzza does not introduce a healthier pizza. What level of incremental sales is associated with introducing the new pizza in this case?Plz give correct answer with thorough explanation.... Typed plzzx
- 2. Using the method of Arc elasticity to solve for the demand elasticity of the market for sample bags with the following changes in the market occurred. a. Q2 = 140; Q1= 150 b. P2 = 500; P1 = 450 c. 12 = 700; 11 = 200 Pr12 = 12; Pr11 = 11 Pr22 = 9; Pr21 = 15 a. Show your solutions and interpret results.QUESTION 15 Suppose that if the null that alpha and beta both equal one is true a tost statistic you have calculated s dnitributed as an Fstatistic with 3 and 30 degroes of freedom for the numerator and denominator respectivoly What critical value cuts off 5% of the upper tal of this disitritution? OA.5.168 O B.9 277 OC8617 O D. None of the aboveda 13 Suppose that a researcher, by using a sample of transactions of residential houses, wants to estimate how the price of the houses is affected by the a non presence of an elevator in the building. To this end, he wants to regress the price of the house in thousands euro, price, on the dummy elevator indicating the presence of the elevator (dummy equal to 1) or not (dummy equal to 0). data Unfortunately, he makes a mistake so that he uses the original dummy divided by 100, so a variable that takes value 0.01 if there is an elevator in the building and 0 if not. agio max ontrassegna How the estimated value of the coefficient of the dummy will be affected by this mistake: nda O (a) It will be multiplied by 100 O (b) It will be divided by 100 O (c) It will change according to the proportion of flats in buildings with and without elevator O (d) None of the above Precedente Successivo