Concept explainers
To find: height of a child with an arm span of 100cm
Answer to Problem 75E
The predicted height of the child is (b) 99.4 cm
Explanation of Solution
Given:
- 106.4 cm
- 99.4 cm
- 93 cm.
- 15.7 cm.
- 7.33 cm.
Calculation:
Measurements on young children in Mumbai, India, found a least-squares line for predicting height Y from arm span X.
Measurements are in centimeters (cm).
We are supposed to find the predicted height of a child with an arm span of 100cm.
That is,
Then, the predicted height of child is calculated as follows:
The predicted height of a child with an arm span of 100 cm is about 99.4 cm.
Conclusion:
The predicted height of a child with an arm span of 100 cm is about 99.4 cm.
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