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Suppose a group of chess players gather and decide to rank themselves in "popularity". The popularity score of a player in the gathering is the number of other players in the gathering that player has previously played a game against. Prove that there will be ties in this score among the players in the gathering.

QUESTION 10 YouTube generates revenue by showing ads to consumers who watch videos on its website. Suppose that, for each person watching a video, YouTube receives one dollar in ad revenues (P=1). Arthur is a professional video-game player. He plays the video-game "Fortnite" and uploads his video to YouTube. The number of people who will watch his video depends on Arthur's effort producing the video and increasing its quality. The number Q of viewers as a function of Arthur's effort "e" is given by the function Q= Be. Arthur's offort cost is 202. His utility equals his income minus ys effort cost. To give incentives to Arthur to create better videos and attract more viewers, YouTube decides to pay Arthur a bonus b for each person watching his video. YouTube also has an operational cost 30 Operational cost - 32 which is the cost of maintaining its internet servers and administrative staff. YouTube's profit equals the ad revenue minus the payment to Arthur and the operational cost. Find…

In June 2015, Gallup conducted a poll of a random sample of 14802 adults to determine the well-being of people living in the United States. One question asked, "Did you exercise at least 30 minutes for 3 or more days in the past week?" In the survey, 57.3% of males and 42.7% of females responded yes to this question. Which of the following is true about this scenario?A. 57:3% and 42.7% are both statistiesB. 57.3% and 42.7% are both parameter.C. If we took another random sample of 14802 adults, we would expect to get the exact same results.

A researcher wants to study about the behaviours of postgraduate students in Australia in mobile phone usage.  One of the goals of the study is to analyse whether there is a relationship between the amount of time they spend using the mobile phone and their gender.  What are the two variables involved to achieve that goal?

Suppose you have the following joint distribution of getting an A or B in both Econometrics and British Literature: A in British Literature (X=1) B in British Literature (X=0) Total A in Econometrics (Y=1) B in Econometrics (Y=0) 0.1 0.4 0.5 Total 0.3 0.2 0.5 0.4 0.6 1 What is P(X = 0)? O a. 0.2 Ob.0.6 Oc.0.4 O d. 0.5 None of these e.

Please see below. The 0.7 answer I got came back as being right, but the 1.8 came back as being incorrect.

The Next four Questions Are Based On The Following Information: In a recent marketing experiment, consumers were given one of four different types of dishwashing detergent and asked to use it for a month. At the end of that time they were asked to rate the detergent in terms of overall quality. The results are presented below.     Poor Average Fair Good Total Brand A 5 17 11 10 43 Brand B 14 26 8 18 66 Brand C 10 23 11 17 61 Brand D 11 19 7 5 42 Total 40 85 37 50 212   What percentage of the consumers rated their detergent fair or good?   0.490 0.410 0.175 0.236                   What percentage of the consumers evaluated Brand A?   0.203 0.167 0.230 0.189               What percentage of the consumers rated their detergent average or better?   0.236 0.401 0.811 0.175               What percentage of the consumers rated their detergent below average?   0.410 0.590 0.175 0.189

Context : The London Metro Bus is crowded for travel during peak hours. During such travel hours two daily passengers ‘James’ and ‘Robert’ enter the Metro. Luckily, two adjacent seats are free in the bus. Each of them must decide whether to sit or stand. For both, sitting alone is more comfortable than sitting next to the other person, which in turn is more comfortable than standing. Question : Assume that both ‘James’ and ‘Robert’ are altruistic, ranking outcomes according to the other person’s comfort and, out of politeness, prefer to stand than to sit if the other person stands. Model the situation as a strategic game and find any Nash equilibrium (equilibria) if it exists. Does a dominant strategy exist for either ‘James’ or ‘Robert’ with these preferences?  show ALL steps and working in support to your answer

10 Suppose that in a particular state a standardized test is given to all graduating se- niors. Let score denote a student's score on the test. Someone discovers that perfor- mance on the test is related to the size of the student's graduating high school class. The relationship is quadratic: score = 45.6+ .082 class .000147 class², where class is the number of students in the graduating class. (i) How do you literally interpret the value 45.6 in the equation? By itself, is it of much interest? Explain. (ii) From the equation, what is the optimal size of the graduating class (the size that maximizes the test score)? (Round your answer to the nearest integer.) What is the highest achievable test score? (iii) Sketch a graph that illustrates your solution in part (ii). (iv) Does it seem likely that score and class would have a deterministic relationship? That is, is it realistic to think that once you know the size of a student's graduating class you know, with certainty, his or her test…

Q5Q6: Both questions correlate with each other. Complete the following using the graph

Please help me with the last three question d,e,f. Thank you.

1. The following data represent the number of days absent and the final grade for a sample of college students in a general education courses at a large state university. 1 2 3 5 6 7 8 9 # of absences 0 Final Grade 89.2 86.4 83.5 81.1 78.2 73.9 64.3 71.8 65.5 66.2 a. Test whether there is a linear correlation between the number of absences and the final grade, use 0.01 level of significance. Assume requirements satisfied. b. Find the equation of least square regression line. c. Find the best predicted final grade for a student who misses five class periods.

Is there any graph that can support this answer?

The last answer appears to be incorrect, please help with this

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…

The following week, Amaia's informatics faculty advisor gives her some advice. In all their years of teaching they claim to observe that working on 75 multiple choice questions boosts a student's test score by about the same amount as spending an hour reviewing lecture notes. For simplicity, assume students are able to review lecture notes at a constant pace during each hour spent studying. Given this information, in order to use her 4 hours of time spent studying to get the highest possible test score, how many hours should she have spent solving multiple choice problems, and how many hours should she have spent reviewing lecture notes? 0 hours working on problems, 4 hours reading 1 hour working on problems, 3 hours reading 2 hours working on problems, 2 hours reading 4 hours working on problems, 0 hours reading

answer the following questions please

A CBS News poll involved a nationwide random sample of 651 adults, asked those adults about their party affiliation (Democrat, Republican or none) and their opinion of how the US economy was changing ("getting better," "getting worse" or "about the same"). The results are shown in the table below. If we randomly select one of the adults who participated in this study, compute: (round to four decimal places)a.P(affiliated with neither party) = b.P(better) = c.P(better|affiliated with neither party) = d.P(affiliated with neither party|better) = e.P(affiliated with neither party and better) =

xt:Bong-Cha is deciding what to do during the 30-minute break between her college classes. One rule she could follow is, "Choose the activity with the highest value" (A). Another rule she could follow is, "Choose the activity with the lowest opportunity cost" (B). Do you think Bong-Cha's choice if she follows rule (A) will be the same as the choice she would make if she followed rule (B)? [another way to think about it, "Is rule (A) identical to rule (B) in a sense that they would both induce the same choice?"].

.A researcher is collecting individual data by asking visitors in a train station in a medium sized town to fill in a questionnaire. It takes nearly 30 minutes to complete the survey questions. To encourage higher participation rate, the researcher provides a small financial incentive that is enough to buy a sandwich. The researcher wants to use this sample to make predictions about effect of using social media on health among the residents of the town. a. Explain the random sampling assumption, that is one of the Gauss-Markov assumptions for linear regressions. b. Do you think this assumption is satisfied in the sample collected by the researcher? c. What are the possible consequences of violation of random sampling assumption for predictions based on this sample?

the answer to this question is Q5.15= DONT KNOW but we just need to find how we get that answer for these questions, please help NO EXCEL

How would the answer change if w = 5. (see image attached)

A city in Metro Manila conducted a survey on selling a Modernized PUV. They have surveyed 2 questions to the 1000 Filipino jeepney drivers/operators. a. Question 1: Would you buy a Modernized PUV for P50,000/month? 20 people Would you buy a Modernized PUV for P5,000/month? 700 people Would you buy a Modernized PUV for P500/month? 900 people Would you buy a Modernized PUV for P50/month? 1000 people b. Question 2: Would you sell your Modernized PUV for P50,000/month? 950 people Would you sell your Modernized PUV for P5,000/month? 500 people Would you sell your Modernized PUV for P500/month? 90 people Would you sell your Modernized PUV for P50/month? 3 person What would be the suitable balance of price? (Hint: Use two-point formula) What would be the number of people interested?

An experiment consists of asking 3 women at random if they wash their dishes with brand X detergent.   List the elements of S corresponding to event E that at least 2 of the women use brand X

Answer the following question

please answer the first three questions (a,b,c) fully and clearly

Three researchers are evaluating taste preferences among three leading brands of cola. After participants taste each brand, the first researcher simply checks to see if participants can distinguish them reliably by labeling each cola as "same" or "different" from the others, by giving them the same or different letter or number code. The second researcher asks each participant to identify the most preferred, the second most preferred, and the least preferred. The third researcher asks each participant to rate each of the colas on a 10-point scale, where a rating of 1 indicates “terrible taste” and 10 indicates “excellent taste," with the assumption that the difference betweeen a rating of 4 and 6 is the same as the difference between a 6 and 8. Identify the scale of measurement used by each researcher.     nominal; ordinal; interval     interval; ordinal; nominal     nominal; interval; ordinal     ordinal; interval; ratio

According to Wine-Searcher, wine critics generally use a wine-scoring scale to communicate their opinions on the relative quality of wines. Wine scores range from 0 to 100, with a score of 95 – 100 indicating a great wine, 90 – 94 indicating an outstanding wine, 85 – 89 indicating a very good wine, 80 – 84 indicating a good wine, 75 - 79 indicating a mediocre wine, and below 75 indicating that the wine is not recommended. Random ratings of a pinot noir recently produced by a newly established vineyard in 2018 follow: Excel File: data07-11.xlsx 87 91 86 82 72 91 60 77 80 79 83 96 a. Develop a point estimate of mean wine score for this pinot noir (to 2 decimals). b. Develop a point estimate of the standard deviation for wine scores received by this pinot noir (to 4 decimals).

The board of a football club consists of three extremely wealthy owners and five fans of the club. To decide on a proposal, the board uses a voting game in which all three wealthy owners and at least two fans must vote in favour in order for the proposal to be accepted. (a) Show that the voting game use by the board for deciding whether to approve a motion can be weighted. (b) For the voting game used by the board, find the Shapley-Shubik index of each fan. Hence, or otherwise, find the Shapley-Shubik index of each extremely wealthy owner. (c) Suppose that the board changes the voting game used to decided whether to ap- prove a proposal so that, in order to be approved, at least two extremely wealthy owners and at least three fans must vote in favour of the proposal. Can this voting game be weighted? Brieflv justifv vour answer.