Q-1. Consider a simple hypothetical situation involving three alternatives and three attributes. All of the attributes are to be maximized, and the weights are 0.6 for the first attribute and 0.2 for each of the remaining attributes. The attribute values for each of the three alternatives are given in the following table: A₁ A₂ Ay C₁ 1500 900 1200 C₂ 55 80 73 C₁ 4 6 9 Using the following threshold values, C = 0.5 and D* = 0.3, determine a ranking for the three alternatives using the ELECTRE I method.
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- Data was collected for 40 randomly selected trees growing in the median strip of a busy freeway. The height of each tree (in inches) was recorded. Data was recorded to the nearest whole inch. The data is summarized in the histogram below. Based on this histogram, determing the minimum and maximum possible tree heights for the recorded data. Note: Each class contains its lower class boundary, but not its upper class boundary.Minimum tree height = inchesMaximum tree height = inchesGrade points are assigned such that an A receives 4 points, a B receives 3 points, a C receives 2 points, a D receives 1 point, and a F receives 0 points. Grades are weighted according to credit hours (units). If a student receives an A in a four-unit class, a D in a two-unit class, a B in a three-unit class and a C in a three-unit class, what is the student's grade point average? O A. 2.75 O B. 1.75 O C. 3.00 O D. 2.50 Click to select your answer. DELL XXX EVD disc RW DELL2) The manager of the cosmetics section of a large department store wants to determine whether newspaper advertising really does affect sales. For her experiment, she randomly selects 15 items currently in stock and proceeds to establish a baseline. The 15 items are priced at their usual competitive values, and the quantity of each item sold for a 1-week period is recorded. Then, without changing their price, she places a large ad in the newspaper, advertising the 15 items. She records the quantity sold for a 1-week period. The results are as follow: Item No. of Sold Before Ad No. of Sold After Ad 1. 25 32 18 24 3 7 4 42 40 16 19 6. 20 25 7 23 23 32 35 60 65 10 40 43 11 27 28 12 7 11 13 13 12 14 23 32 15 16 28 Using a - 0.052 tail , what can you conclude?
- The following data represent the results of a repeated-measures study comparing different viewing distances for a 42-inch-high-definition television. Four viewing distances were evaluated, 9 feet, 12 feet, 15 feet, and 18 feet. Each participant was free to move back and forth among the four distances while watching a 30-minute video on the television. The only restriction was that each person had to spend at least 2 minutes watching from each of the four distances. At the end of the video, each participant rated the all off of the viewing distances on a scale from 1 (very bad, definitely need to move closer or father way) to 7 (excellent, perfect viewing distance). Use a repeated-measures ANOVA with alpha = 0.05 to determine whether there is significant difference among the four viewing distances.1. During the second quarter, market share for streaming services were recorded as Hulu - 22%, Netflix - 59%, and Amazon Prime - 19%. A sample of 600 users yielded the following viewing audience data. We want to determine whether or not there has been a significant change in the market share of the streaming services. Using α=0.05, perform the test. Number of users p1 ei Hulu 150 0.22 33 Netflix 366 0.59 80.52 Amazon Prime 84 0.19 18.482. A real estate expert wanted to find the relationship between the sale price of houses and various characteristics of the houses. He collected data on five variables, recorded in the table, for 12 houses that were sold recently. The five variables are: Sale price of a house in thousands of dollars. Size of the lot in acres. Price: Lot Size: Living Area: Living area in square feet. Age: Type of house: town house (T) or Villa (V) Age of a house in years. Price Lot Size Living Area Age Туре of house 255 1.4 2500 8 T 178 0.9 2250 12 T T. T. T. 263 1.8 2900 5 0.7 2.6 127 1800 24 305 3200 10 164 1.2 2400 18 245 2.1 2700 T V 146 1.1 2050 28 287 2.8 2850 13 V 189 1.6 2600 9 211 1.7 2300 8 V 123 0.5 1700 11 V a) Find the regression equation for the town house b) Find the regression equation for the Villa c) What is the price of a town house with a lot size of 1.3, living area of 1800, and is 7 years old? EBBBBE A> >}>l> >{
- The boxplots for the grade scores in the midterm exam in a Calculus I class for two different classes is attachedClass 1: Q1= 65 M= 70 Q3 = 80Class 2: Q1= 60 M= 70 Q3 = 75Which class is likely to have a greater percentage of students with grades smaller or equal to 70? Class 2 Class 1 It is impossible to tell. Neither Both classes are about equal. Which class has 50% percentage of students with grades between 70 and 80? Class 2 Both classes are about equal. Neither It is impossible to tell. Class 1 For which class did 25% of students receive grades between 60 and 70? Both classes are about equal. Class 1 Class 2 Neither It is impossible to tell.12 (9 complete) ▼ HW Score: 36.5%, 4.38 of 12 pts 2.4.31 Question Help ▼ In an orchestra, 20 people can play stringed instruments, 18 can play brass, and 14 can play percussion. Further, 8 of the performers can play both strings and brass, whereas 8 can play both strings and percussion. If no one can play all three types of instruments, what are the maximum and minimum numbers of people in the orchestra? (Hint: Consider expressing the numbers in some of the regions of your diagram in terms of a single unknown, say x.) The maximum number of people is and the minimum number of people is. Enter your answer in the edit fields and then click Check Answer. Check Answer Clear All All parts showing SAMSUNGThe retailing manager of a food chain wishes to determine whether product location has any effect on the sale of pet toys. Three different aisle locations are to be considered: front, middle, and rear. A random sample of 18 stores is selected with 6 stores randomly assigned to each aisle location. The size of the display area and price of the product are constant for all stores. Ant the end of a 1-week trial period, the sales volume (in thousands) of the product in each store was as follows: Aisle Location Front Middle Rear 8.6 2.0 4.6 7.2 3.2 2.8 5.4 2.4 6.0 4.0 1.8 2.2 5.0 1.4 2.8 6.2 1.6 4.0 At the .05 level of significance, is there evidence of a difference in average sales between the various aisle locations? Yes, 14.1 > 3.68 No, 14.1 > 3.68 Yes, 36.4 > 22.4 Yes, 22.4 > 12.4 What is the p-value?
- indicate the dependent and independent variables, the number of levels for each independent variable, and whether each variable is within-subjects or between subjects. 3. A researcher standing by the door of a grocery store stops half of the males and half of the females who enter alone and presents them with a free gift of a pen and a small pad of paper; the other shoppers do not receive a gift. The researcher then notes how much money each shopper spends in the store.To receive a C grade, a student must average more than 7777 but less than or equal to 8585. If Noah received a C in the course and had five grades of 7373, 8585, 7373, 6969, and 7878 before taking the final exam, what were the possible grades for his final if there were 100100 points possible? (Assume all six grades are weighted equally and let x represent the unknown score.)Research Scenario: A substance abuse counselor wants to demonstrate the effect of situational stress on alcohol cravings. He recruits two groups of men who are similar in respect to the history of alcohol use and demographic variables. He divides these participants into two groups. In one group (n=11), the men are exposed to a stressful situation and then asked to complete a measure rating their alcohol cravings on a scale from 0-10, where 0 represents no cravings and 10 represents intense cravings. In the second group (n = 10), the men are exposed to a neutral situation and asked to complete the same measure. The data are contained in the table below. Does a stressful situation result in more intense alcohol cravings than a non-stressful situation?Stressful Situation Neutral Situation Stressful Situation Neutral Situation 5 3 7 8 7 2 4 3 8 1 6 6 3 2 9 8 6 9 6 3 8