The average gasoline price per gallon (y) in 10th of SR and the cost of a barrel of oil (x) in 10th of SR are shown in the following table for a random selection of weeks within a year. Thecorrelation coefficient value, the intercept value in 10th, the predicted value for the gasoline price when the oil price is 584 SR respectively.Oil Price445465604765624063616964554545704170Gasoline Price16104151415751616167121311161616

Regression: In order to obtain the least square regression line, first perform regression analysis…

Answered: The average gasoline price per gallon…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The price (in Tk.) and demand (in kg) of a product is given in the following table: Price (Tk.) 25 37 40 45 48 50 55 70 Demand (kg) 10 8 9 7.5 4.5 3 2 a. Determine the coefficient of correlation between the two variables. Answer rounded to three decimal places. b. Determine the slope coefficient B1 for the regression of Demand on Price. Answer rounded to three decimal places. c. Determine the y-intercept Bo for the regression of Demand on Price. Answer rounded to two decimal places. d. What will be the demand when price is Tk. 52? Answer rounded to two decimal places. LO
The following table lists the monthly sales and advertising expenditures for 10 months of a digital electronics company in year 2017. 103 109 112 115 117 116 118 114 121 10 123 Sales (RM 000's) 4.4 5.9 6.5 6.8 7. 7.2 7.4 7.8 8.1 Advertising (RM 000's) a:
Pa.n.n
The data below was collected from manufacturer advertisements of their vehicles horsepower (x) and highway gas mileage (mpg=y). Use this data to answer the following questions. horsepower 146 250 340 350 390 190 220 mpg 33 28 15 17 11 35 42 1. Find the p-value to determine if there is a linear correlation between horsepower and highway gas mileage (mpg). Record the p-value below. Round to four decimal places.p-value==2. Is there a linear correlation between horsepower and highway gas mileage (mpg)? 3. If there is a linear correlation, write the correlation coefficient below. Otherwise, leave it blank. Round your final answer to four decimal places. Be careful with your sign.r=r= 4. If there is a linear correlation, write the regression equation below. Otherwise, leave it blank. Round all numbers to four decimal places.ˆy=y^=5. Using the data shown above, predict the the highway gas mileage (mpg) for a car that has a horsepower of 225. Round your final answer to two decimal…
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Use the data in the table, which shows the average annual salaries (both in thousands of dollars) for public school principals and teachers in the U.S. for 11 years. Apply what you have learned in the previous tab to complete this graded lab questions. 1. Repeat the steps from tab #1 using this data to construct a scatter plot graph and calculate the correlation coefficient R. (Recall the corelation coefficient is R and not R Teachers y Principalsx 77.8 43.7 78.4 43.8 80.8 45.0 R= 80.5 45.6, 2. Does the R value represent a positive, negative or no correlation between the salaries ol the teachers and principals? As teacher salaries increase, what happens to prinicipal salaries? 10 11 81.5 45.9 84.8 48.2 12 13 87.7 49,3 3. Write the equation of the regression line for the data below. The equation is y= 14 91.6 51.3 52.9 Teachers y 15 16 95.7 54.4 COD 54.2 =D0.5873x-2.0s07o R=0.995, 17 95.7 4. Use the regression equation that you found in exercise #3 to predict the average annual salary…
1945 is paired with cancer rates for 1975. The cigarette consumption data is from 1945 to 1975 in 5-year increments. There is a strong positive linear association between annual cigarette consumption and lung cancer rates. The correlation is 0.81. If we use the line to make predictions of the number of lung cancer deaths per 100,000 people, which of the following is an example of extrapolation? a. Predict Y when cigarette consumption is 3,500 cigarettes per person. b. Predict Y when cigarette consumption is 3,800 cigarettes per person. c. Predict Y when cigarette consumption is 4,600 cigarettes per person.

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