Question

Find the equation of the regression line for the given data. Then construct a scatter plot...

Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line.​ (Each pair of variables has a significant​ correlation.) Then use the regression equation to predict the value of y for each of the given​ x-values, if meaningful. The caloric content and the sodium content​ (in milligrams) for 6 beef hot dogs are shown in the table below.

font size decreased by 1 font size increased by 1 Calories comma xCalories, x

150

180

120

120

90

190

​(a)

xequals=170

calories
​(b)

xequals=100

calories

​Sodium, y

420

470

340

380

280

530

​(c)

xequals=140

calories
​(d)

xequals=210

calories

Find the regression equation.

ModifyingAbove y with caretyequals=nothingxplus+​(nothing​)

​(Round to three decimal places as​ needed.)

Homework Answers

Answer #1

a)

predicted val=80.245+170*2.281=468.0

b)

predicted val=80.245+100*2.281= 308.3

c)

predicted val=80.245+140*2.281=399.6

d)

not meaningful, since 210 falls outside the range of x value  

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