The regulation of electric and gas utilities is an important public policy question affecting consumer's choice and cost of energy provider. To inform deliberation on public policy, data on eight numerical variables have been collected for a group of energy companies. To summarize the data, hierarchical clustering has been executed using Euclidean distance to measure the similarity between observations and the Single Linkage's method as the agglomeration method. What are the first two companies that got merged? O 14 and 19 O4 and 20 O 10 and 13 O1 and 18 iam
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- Research engineers with the University of Kentucky Transportation Research Program have collected data on accidents occurring at all intersections in Lexington, Kentucky, over a period of 5 years. One of the goals to study was to compare the average number of left-turn accidents at locations with and without left turn only lanes to develop numerical warrants (or guidelines) for the installation of left turn lanes. a) Determine the population of the interest, its sample and variables. b) List one suitable method to collect the data.The business objective of the director of planning of Game Ghana is to forecast monthly sales for all new stores, hased on the number of profiled customers who live no more than 30 minutes from a Game store. To examine the relationship between the number of profiled customers who live within a fixed radius from a Game store and its monthly sales, data were collected from a sample of 10 stores: Store 3 4 5 6 789 10 No. of Customers ('000) Monthly Sales ('000) ) Use the least-squares method to compute the regression coefficients a and b. 572 8 43 2453 812 6 14 879 10 12 8 (ii) Write down the estimated equation and predict the monthly sales if there are 9000 customers. (ii) Determine the coefficient of determination, r², and explain its meaning in this problem.The amount of flow through a solenoid valve in an automobile’spollution-control system is an important characteristic.An experiment was carried out to study howflow rate depended on three factors: armature length,spring load, and bobbin depth. Two different levels (lowand high) of each factor were chosen, and a singleobservation on flow was made for each combination oflevels.a. The resulting data set consisted of how manyobservations?b. Is this an enumerative or analytic study? Explainyour reasoning.
- A edugen.wileyplus.com WileyPLUS Final Project PLUS Lock, Statistics: Unlocking the Power of Data, 2e Help | System Announcements 4 ВАСК NEXT PRINTER VERSION Chapter P, Section 2, Exercise 062 Identifying Spam Text Messages Bayes' rule can be used to identify and filter spam emails and text messages. This question refers to a large collection of real SMS text messages from participating cellphone users.' In this collection, 747 of the 5574 total messages (13.40%) are identified as spam. The word "free" is contained in 4.75% of all messages, and 3.57% of all messages both contain the word "free" and are marked as spam. The word "text" (or "txt") is contained in 7.01% of all messages, and in 38.55% of all spam messages. Of all spam messages, 17.00% contain both the word "free" and the word "text" (or "txt"). For example, "Congrats!! You are selected to receive a free camera phone, txt ******* to claim your prize." Of all non-spam messages, 0.06% contain both the word "free" and the word…use a pivot table to construct a cross-tabulation for marital statues and housing type for the data provided.3. Interpreting large datasets is a necessary yet difficult challenge in most of the data science disci- plines. Hence, dimensionality-reduction techniques are often used in data pre-processing, where the result should preserve the most significant features of the original dataset with minimal information loss. In this question, we will illustrate a dimensionality-reduction technique to determine the "most popular" show on a streaming service based on three metrics: the average rating, the average number of recommendations, and the retention rate. Name Rating Recommendations Retention The Butcher of Blaviken Salary Swindle Unusual Objects 1 4.0 2.0 0.60 4.2 2.1 0.59 3 3.9 2.0 0.58 4 Calamari Contest 4.3 2.1 0.62 The Sicilian Defense 4.1 2.2 0.63 The covariance matrix E contains the variances of the variables along the main diagonal and the covariances between each pair of variables in the other matrix positions as follows: 0.025 0.0075 0.00175 0.0075 0.0070 0.00135 0.00175 0.00135…
- Four used cars were selected from a used car lot. A spreadsheet of database shows the following information about these cars. Brand/Color/Milage/size Ford-red-20000-large Toyota-blue-50000-small Chevrolet-black-85000-midsize Honda-grey-125000-small A) List the categories in variable "size" B) List the quantitative variable (s) Show workThe amount of flow through a solenoid valve in an automobile’spollution-control system is an important characteristic.An experiment was carried out to study howflow rate depended on three factors: armature length,spring load, and bobbin depth. Two different levels (lowand high) of each factor were chosen, and a singleobservation on flow was made for each combination oflevels. The resulting data set consisted of how manyobservations?You are a consultant to EAI and you have received the data on theannual salaries of 2500 managers. Some of these managers have alsoindicated that they have received some training. Conduct theappropriate descriptive analyses and present a report that willenable EAI to understand its operations. The link to the data is: https://drive.google.com/file/d/1KluyxHQdEsVNA38_EWPcEgKUJomm9b67/view
- O NWP Assessment Player UI Appli x O CCSU - Meeting Detail prin X 9 NWP Assessment Player UI Appli X ent.education.wiley.com/was/ui/v2/assessment-player/index.html?launchld%36a59eb28-30ec-4b3f-9a67-cba2a3a48b85#/question/17 -/ 1 Question 18 of 20 Rocket Tracking. A tracking station has two telescopes that are 3 miles apart. Each telescope can lock onto a rocket after it is launched and record its angle of elevation to the rocket. If the angles of elevation from telescopes A and B are 33 and 84°, respectively, then how far is the rocket from telescope A? 84° 3 mi Round your answer to one decimal place. ...pdf %23 bp tg ho 41 144 PA 24 4. % & E 00Suppose a study is conducted using only Boeing 737s traveling 800Kms on comparable routes during the same season of the year. Can the number of passengers predict the cost of flying such routes? It seems logical that more passengers result in more weight and more baggage, which could, in turn, result in increased fuel consumption and other costs. Suppose the data displayed in the table below are the costs and associated number of passengers for twelve 800-kms commercial airline flights using Boeing 737s during the same season of the year. We will use these data to develop a regression model to predict cost by number of passengers. A plot of the data collected is shown in Figure 3. Cost 600 550 500 450 400 350 300 5 6 6 7 7 8 Number of Passengers 8 9 9 10 Figure 3: Scatter plot of number of passengers on the x-axis and Cost on the y-axis.Suppose a study is conducted using only Boeing 737s traveling 800Kms on comparable routes during the same season of the year. Can the number of passengers predict the cost of flying such routes? It seems logical that more passengers result in more weight and more baggage, which could, in turn, result in increased fuel consumption and other costs. Suppose the data displayed in the table below are the costs and associated number of passengers for twelve 800-kms commercial airline flights using Boeing 737s during the same season of the year. We will use these data to develop a regression model to predict cost by number of passengers. A plot of the data collected is shown in Figure 3. Cost 600 550 500 450 400 350 300 5 6 6 7 7 8 Number of Passengers 8 9 9 10 Figure 3: Scatter plot of number of passengers on the x-axis and Cost on the y-axis. a) Describe the relationship between number of passengers and Cost based on Figure 3.