Corey used the regression equation y = 1.505x - 88.21, where x is the temperature and y is the number of swimmers, to determine a possible outside temperature when 80 swimmers are at City Pool.

1. y = 1.505 (80) - 88.21

2. y = 120.4 - 88.21

3. y = 32.19

4. If there are 80 swimmers at the pool, the temperature is likely to be 32.2°F.

Analyze Corey's work to find his error. What is Corey's mistake?

Question

Dunn

Mathematics

9 January, 21:00

Corey used the regression equation y = 1.505x - 88.21, where x is the temperature and y is the number of swimmers, to determine a possible outside temperature when 80 swimmers are at City Pool.

1. y = 1.505 (80) - 88.21

2. y = 120.4 - 88.21

3. y = 32.19

4. If there are 80 swimmers at the pool, the temperature is likely to be 32.2°F.

Analyze Corey's work to find his error. What is Corey's mistake?

+1

Answers (1)

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Juliette Mullins · Answer 1

Answer: Corey substituted the number of swimmers into the variable (x) representing the temperature. Then he didn't wonder if the polar bear club really has 80 members.