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1 January, 04:05

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

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Answers (2)
  1. 1 January, 04:43
    0
    B. 65.84

    Step-by-step explanation:

    You are given the armspan and a relation between that and height. Put the given value in the equation and solve for the unknown.

    ... 67.5 = 1.123x - 6.443

    ... 73.943 = 1.123x

    ... 73.943/1.123 = x = 65.84

    Riley's height is predicted to be 65.84 inches.
  2. 1 January, 06:46
    0
    B. 65.84

    Step-by-step explanation:

    i took on edg test. you are welcome
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