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noname [10]
2 years ago
15

Bryce wrote the linear regression equation y = 1. 123 x minus 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? 54. 36 inches 65. 84 inches 66. 55 inches 69. 36 inches.
Mathematics
1 answer:
GrogVix [38]2 years ago
4 0

The best prediction of Riley’s height is 65.84 inches and it can be determined by using the linear regression equation.

<h2>Given that,</h2>

Bryce wrote the linear regression equation,

\rm y=1.123x-6.443

To predict the arm span, y, of a person who is x inches tall.

Riley has an arm span of 67.5 inches.

<h3>We have to find,</h3>

Which is the best prediction of Riley’s height?

<h3>According to the question,</h3>

To predict the arm span, y, of a person who is x inches tall.

Riley has an arm span of 67.5 inches.

<h3>The linear regression equation is,</h3>

\rm y=1.123x-6.443

Where the arm span, y, of a person who is x inches tall.

Riley has an arm span of 67.5 inches,

Then,

The best prediction of Riley’s height is,

\rm  67.5 = 1.123x -6.443\\\\67.5+6.443=1.123x\\\\ 73.943 = 1.123x\\\\ x = \dfrac{73.943}{1.123}\\\\  x = 65.84 \ inches

Hence, The best prediction of Riley’s height is 65.84 inches.

For more details about the Equation refer to the link given below.

brainly.com/question/9540093

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