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:
x
1 = Reading comprehension score
GROUP:
x
2 = 1 if child received a Be Sun Safe demonstration, 0 if not
The following two models were hypothesized:
Model 1: E(y) = β
0 + β
1x
1 + β
2x
12 + β
3x
2 + β
4x
1 x
2 + β
5x
12x
2 Model 2: E(y) = β
0 + β
1x
1 + β
3x
2 + β
4x
1x
2A 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.
Cross-sectional data showing that the amount of effort spent on personal health care increases with
Raphael, The School of Athens.
Health care setting.
The annual pattern of rings changes with ocean temperature and coral health
Testing Infants’ Knowledge
The best thing about back to school