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Bryce wrote the linear regression equation y=1.123x-6.443 to predict the armspan, y, of a person who is x inches tall. Riley has an armspan of 67.5 inches. Which is the best prediction of Riley’s height?
A ) 54.36 inches
B ) 65.84 inches
C ) 66.55 inches
D ) 69.36 inches

Respuesta :

carlosego
For this case what you should do is use the linear equation that Bryce wrote and replace the corresponding value of y which is 67.5 inches. Then, you must clear x to find the height.
 We have
 y = 1.123x-6.443
 67.5 = 1.123x-6.443
 Clearing x
 x = (67.5 + 6.443) / (1.123) = 65.84
 The best prediction of Riley's height is 65.84 inches.
 answer
 B) 65.84 inches
lhmarianateixeira

In this exercise we have to use the height knowledge to calculate which is the final one, like this:

Letter B

We have that the equation is given by:

[tex]y = 1.123x-6.443\\ 67.5 = 1.123x-6.443[/tex]

Performing the calculations we find that:

[tex]x = (67.5 + 6.443) / (1.123) = 65.84[/tex]

See more about height at brainly.com/question/26203667

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