the regression equation y = 0.842x + 37.664 correlation coefficient of r = 0.897. You want to predict what value (on will be obtained from a value of 180 as the explanatory variable.

Q: For every year of age a persons score on the questionnaire is expected to increase by how many…

A: Here dependent variable is the happiness questionnaire score. The Independent variable is the…

Q: The linear regression equation for predicting systolic blood pressure from age is: y = 37 +2.7"x…

A: To find the residual for a person who is 31 years of age with a systolic blood pressure of 122.7, we…

Q: Based on the regression output, if a printer can print 4.8 pages per minute and copies in color,…

A: It is given that The reqression equation is Price = 238.3 + 26.8 Speed + 57.7 Color

Q: Two variable are found to have a strong negative linear correlation. Pick the regression equation…

A: The general equation of estimated regression line isy^=bx+a whereb=rsysx

Q: Two variable are found to have a strong positive linear correlation. Pick the regression equation…

A: Four regression equations are given as follows:

Q: tuition, y year, x 9683 0. (1997) 1. (1998) The data in the chart show the cost of tuition at a…

A: Given that: X Y 0 9683 1 10148 2 10744 3 11413 4 11990

Q: In a linear regression model, calculate the slope of the line, b1, when the correlation coefficient…

A: The formula to calculate slope of line is as follows : b1 = r×sysx

Q: You run a regression analysis on data with two variables and you obtain the regression equation y =…

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Q: A researcher determines that the correlation between number of siblings X and parental satisfaction…

A: The regression model given is: Y = 4.6 + 1.2X This means that for every one-unit increase in the…

Q: From a regression equation r = 0.71 and the slope = 3.5. What is the linear correlation coefficient…

A: Given : r² = 0.71  slope = 3.5

Q: The regression equation between two variables X and Y is Y = 1.8 + 2.5 X Find the predicted Y…

A: Answer: From the given data, The regression equation for X and Y variables is, Y = 1.8 + 2.5 X

Q: When you solve and get an r value for the correlation coefficient, what information is revealed by…

A: We know that Correlation measures tye association between the two variables.  If two variables move…

Q: test scores (Y). The results of the regression were: y=ax+b a=6.813 b=21.42 r2=0.403225 r=0.635 Use…

A: The regression equation is given by, y = ax+b y = 6.813 * x + 21.42

Q: A recent study of the cost of dinner and tipping produced the regression equation shown below…

A: $12.26Explanation:To calculate the predicted tip amount for an $84.62 bill using the regression…

Q: If the coefficient of determination is calculated as 0.48 and regression equation y = 2.4 – 3.5x,…

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Q: The manager of the company wants to know how different variables affect the sales of his vehicles. A…

A: The independent variable is the variable the experimenter changes or controls and is assumed to have…

Q: The data show the bug chirps per minute at different temperatures. Find the regression equation,…

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Q: A regression was run to determine if there is a relationship between hours of study per week (xx)…

A: Given The results of the regression were:y=ax+b a=5.89 b=34.42 r2=0.837225 r=0.915 So putting values…

Q: You run a regression analysis and obtain the regression equation y = 1.784x 22.666 with a…

A: Formula for predicted response value (Y) Y= bX + a  Where X is explanatory variable

Q: What does the regression line represent?

A: Given Information: The information regarding the regression line.

Q: A regression was run to determine if there is a relationship between hours of TV watched per day (x)…

A:

Q: In a regression context, under what situation is the predicted value for Y equal to the mean of Y?

A: To find: under what situation is the predicted value for Y equal to the mean of Y   Let us assume…

Q: The slope of a regression line (y on x) is -0.24, we know that SDy=3.2 and SDx=4.0, then the…

A: The regression line Y on X is as follows. y=a+bx b is the slope of the regression line. a is the…

Q: The least-squares regression equation is y = 602.1x + 17,023 where y is the median income and x is…

A: The question is about regression.Given :Regression equation : Correlation coefficient ( r ) =…

Q: If two regression coefficients bxy = 0.78 and byx = 0.59, find the correlation coefficient (r)?…

A: Answer: From the given data, The regression coefficients are b xy = 0.78 and b yx = 0.59

Q: You run a regression analysis on a bivariate set of data (n = 66). With a = 78.7 and = 71.7, you…

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Q: Suppose that you run a correlation and find the correlation coefficient is -0.596 and the regi…

A: The p-value for the slope is greater the level of significance of 0.05.

Q: Suppose that you run a correlation and find the correlation coefficient is 0.317 and the regression…

A:

Q: A regression was run to determine if there is a relationship between hours of study per week (x) and…

A:

Q: The slope of a regression line=-6.879 How do you interpret the slope? Is it significant?

A: We know that the slope is the value of a regression equation by which we can measure the impact of…

Q: You run a regression analysis on a bivariate set of data (n obtain the regression equation 38). With…

A:

Q: Respond to the following prompts in your initial post: 1. Identify the explanatory variables and…

A: Since there are multiple sub-parts, as per the honor code the first three sub-parts will be solved.…

Q: Two regression lines of a sample are X+6 Y=6 and 3X+2Y=0. Find the correlation coefficient.

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Q: From a regression equation r2= 0.39 and the slope = -2.8 What is the linear correlation coefficient…

A: Given information: The value of the slope is b=-2.8. The value of r2=0.39.

Q: You run a regression analysis on two numerical variables and Y₂ where is the explanatory variable…

A: Regression equation y is. y = -2.859 x + 59.865  Correlation coefficients r = -0.964

Q: Given the equation of a regression line is y= -1.5x-1.8, what is the best predicted value for y…

A:

Q: mean of x = 2.882, standard deviation = 1.634 Mean of y = 2.588, standard deviation = 0.246…

A: Regression Equation =     = a + b * x Where b be the slope of the line      a is the y…

Q: You conducted a regression analysis between the number of absences and number of tasks missed by…

A: The regression line equation is in the form of straight-line equation                             y…

Q: You run a regression analysis on a bivariate set of data (n = 99). With * = 41.3 and y = 23.1, you…

A: given data bivariant data set n = 99 x¯ = 41.3 y¯ = 23.1

Q: coefficient is -0.281 and the regression equation is = 27.68 2.2x. The mean for the x data values…

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Q: Using the data, the mad scientist wishes to compute a regression equation to predict future Werewolf…

A:

Q: The correlation between X and Y is -.27, and the regression equation is Ŷ = - 0.49X + 9.27 before…

A: Standardization doesnt effect the correlation.So the correlation will be same after the…

Q: Listed below are systolic blood pressure measurements (in mm Hg) obtained from the same woman. Find…

A:

Q: If two regression coefficients are 2.4 and 0.4 then what would be the value of coefficient of…

A:

Q: A regression was run to determine if there is a relationship between hours of study per week (z) and…

A:

Q: Two variable are found to have a strong negative linear correlation. Pick the regression equation…

A: In this case x is the independent variable and y is the dependent variable.

Q: Two variables have a positive linear correlation.  Is the slope of the regression line for the…

A: We have given that  Two variables have a positive linear correlation