MULTIPLE CHOICE QUESTION The SLR of Weight=1+0.5*Height estimate the Weight for Height=180 91 90 Rewatch Submit
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![PowerPoint Slide Show-LinearReg.pptx]-PowerPoint
Bivariate Analysis: Modelling a Linear Relation
Salary 10.41 + 2.1 * Whrs..... (1)
Use the linear model and predict the salary if an
employee works 8 hrs.
Salary 10.41+2.1*8-10.41+16.8-27.21 AFN
MULTIPLE CHOICE QUESTION
The SLR of Weight=1+0.5*Height
estimate the Weight for Height=180
91
90
Rewatch
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- 4) Conduct a hypothesis test on H0: slope = 0; Ha: slope positive or negative (your hypothesis from part 2). Using α = 0.05, is there a significant linear relationship between x and y (paste your output to support your answer)? What is the linear model (y = mx + b, fill in the numbers for m and b)? In the context of the problem, what is the interpretation of the slope, m? Select Stat menu option across the top and then select Regression -> Simple Linear Enter your x and y variables Under the hypothesis test section go to Ha slope and specify the direction of the relationship (< or >) Select Compute sodium protein 130 1015 2260 9140 14200 1180 1.5125 1210 2200 4210 5220 0290 2210 0140 2180 0280 0290 190 1180 0140 480 1220 1140 2190 1125 1200 10 3160 5240 5135 045 0280 0140 3170 375 3220 1250 1.5180 0170 1170…We expect a car's highway gas mileage to be related to its city gas mileage (in miles per gallon, mpg). Data for all 12591259 vehicles in the government's 2019 Fuel Economy Guide give the regression line highway mpg=8.720+(0.914×city mpg)highway mpg=8.720+(0.914×city mpg) for predicting highway mileage from city mileage. (c) Find the predicted highway mileage, ?̂ ,�^, for a car that gets 1212 mpg in the city. Give your answer to three decimal places. ?̂ =�^= mpg Find the predicted highway mileage, ?̂ ,�^, for a car that gets 2222 mpg in the city. Give your answer to three decimal places. ?̂ =�^= mpgStatistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (xx) Cost(yy) 850 55.5 879 47.95 996 48.8 700 41 850 43.5 623 37.15 533 26.65 935 51.75 563 21.15 A student calculates a linear modelyy = xx + . (Please show your answers to two decimal places)Use the model to estimate the cost when number of pages is 460. Cost = $ (Please show your answer to 2 decimal places.)
- Find the least squares regression line for the data points. (Let x be the independent variable and y be the dependent variable.) (−1, 1), (1, −2), (3, −3)Indicate whether the following are true or false. Explain why true or false. a. A standard linear model which is supposed to measure a causal relationship is called a structural equationDefine the Linear Regression Model. Also explain Terminology for the Linear Regression Model with a Single Regressor?
- Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore, and recorded number of pages in each textbook and its cost. The bivariate data is shown below, Number of Pages (xx) Cost(yy) 514 58.12 241 23.28 381 42.48 354 30.32 341 49.28 329 40.32 417 52.36 534 60.72 762 81.96 A student calculates a linear modelyy = xx + . (Please show your answers to two decimal places)Use the model above to estimate the cost when number of pages is 651Cost = $ (Please show your answer to 2 decimal places.)The production of wine is a multi-billion-dollar worldwide industry. In an attempt to develop a model of wine quality as judged by wine experts, data was collected from red wine variants from a particular type of foreign wine. A multiple linear regression model was developed from a sample of 55 wines. The model was used to predict wine quality, measured on a scale from 0 (very bad) to 10 (excellent) based on the alcohol content (%) and the amount of chlorides. a. Construct a 95% confidence interval estimate of the population slope between wine quality and the percentage of alcohol. (Round to four decimal places as needed.)Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (xx) Cost(yy) 671 82.1 893 93.3 267 49.7 819 88.9 424 53.4 429 62.9 530 71 882 106.2 452 68.2 A student calculates a linear modelyy = xx + . (Please show your answers to at least 4 decimal places)Use the model to estimate the cost when number of pages is 606.Cost = $ (Please show your answer to 2 decimal places.) A good regression calculator can be found at Regression Calculator
