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Author Question: A public health researcher wants to use regression to predict the sun safety knowledge of pre-school ... (Read 121 times)

Frost2351

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A public health researcher wants to use regression to predict the sun safety knowledge of pre-school children. The researcher randomly sampled 35 preschoolers, assigned them to one of two groups, and then measured the following three variables:

SUNSCORE: y = Score on sun-safety comprehension test
READING: x1 = Reading comprehension score
GROUP: x2 = 1 if child received a Be Sun Safe demonstration, 0 if not

The following two models were hypothesized:

Model 1: E(y) = β0 + β1x1 + β2x12 + β3x2 + β4x1 x2 + β5x12x2
Model 2: E(y) = β0 + β1x1 + β3x2 + β4x1x2

A partial f-test was conducted to compare the two models and the resulting p-value was found to be 0.0023. Fill in the blank.  The results lead us to conclude that there is                                                (at ).
◦ sufficient evidence of interaction between sun-safety score and reading score.
◦ sufficient evidence of a statistically useful model for sun-safety score.
◦ sufficient evidence of a quadratic relationship between sun-safety score to reading score.
◦ insufficient evidence of quadratic relationship between sun-safety score to reading score.


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Marked as best answer by Frost2351 on Feb 14, 2020

mtmmmmmk

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Frost2351

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Reply 2 on: Feb 14, 2020
Wow, this really help


ricroger

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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