A Public Health Researcher Wants to Use Regression to Predict $\quad y =$

question 94

Multiple Choice

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: $\quad y =$ Score on sun-safety comprehension test
READING: $\quad \mathrm { x } _ { 1 } =$ Reading comprehension score
GROUP: $\quad x _ { 2 } = 1$ if child received a Be Sun Safe demonstration, 0 if not
The following two models were hypothesized:
$$\begin{array} { l } \text { Model 1: } E ( y ) = \beta _ { 0 } + \beta _ { 1 } x _ { 1 } + \beta _ { 2 } x _ { 1 } ^ { 2 } + \beta _ { 3 } x _ { 2 } + \beta _ { 4 } x _ { 1 } x _ { 2 } + \beta _ { 5 } x _ { 1 } ^ { 2 } x _ { 2 } \\\text { Model 2: } E ( y ) = \beta _ { 0 } + \beta _ { 1 } x _ { 1 } + \beta _ { 3 } x _ { 2 } + \beta _ { 4 } x _ { 1 } x _ { 2 }\end{array}$$
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 $\alpha = 0.05$ ) .

• A) sufficient evidence of interaction between sun-safety score and reading score.
• B) insufficient evidence of quadratic relationship between sun-safety score to reading score.
• C) sufficient evidence of a quadratic relationship between sun-safety score to reading score.
• D) sufficient evidence of a statistically useful model for sun-safety score.

Comprehend the process and significance of protein phosphorylation in signal transduction pathways.

Understand the role and regulation of nitric oxide in signal transduction.

Distinguish between types of chemical signaling based on distance and mode of action, such as autocrine, paracrine, and endocrine signaling.

Illustrate how variations in cellular components can lead to diverse responses to the same signaling molecule.

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Definitions:

Yield to Maturity

The total return anticipated on a bond if it is held until the date it matures, accounting for interest payments and the repayment of principal.

Semi-Annual

Occurring twice a year, or every six months.

Quoted

Refers to the current price of a security, commodity, or index as provided by a market or exchange.