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Use the following to answer the questions below:Students in a small statistics course wanted to ...

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Use the following to answer the questions below:

Students in a small statistics course wanted to investigate if forearm length (in cm) was useful for predicting foot length (in cm). The data they collected are displayed in the provided scatterplot (with regression), and the computer output from the analysis is provided.

Use three decimal places when reporting the results from any calculations, unless otherwise specified.

The regression equation is Foot (cm) = 9.22 + 0.574 Forearm (cm)

 Predictor Coef SE Coef T P Constant 9.216 4.521 2.04 0.066 Forearm (cm) 0.5735 0.1578 3.63 0.004
 Source DF SS MS F P Regression 1 44.315 44.315 13.20 0.004 Residual Error 11 36.916 3.356 ​ ​ Total 12 81.231 ​ ​ ​
Predicted Values for New Observations

 Forearm (cm) Fit SE Fit 95% CI 95% PI 28 25.274 0.513 (24.144, 26.403) (21.086, 29.461)

Use the fitted model to predict the foot length for someone whose arm is 30 cm long. Report your answer with two decimal places.

▸ 25.89 cm

▸ 26.12 cm

▸ 25.73 cm

▸ 26.44 cm
Textbook

Statistics: Unlocking the Power of Data

Edition: 3rd
Authors:
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Quiera730Quiera730
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