A Research Project Was Conducted to Study the Effect of a Chemical

question 6

Multiple Choice

A research project was conducted to study the effect of a chemical on undesired insects.The researcher uses 6 dose levels, and at each level exposes 250 insects to the chemical and proceeds to count the number of insects that die.The researcher uses a binary logistic regression model to estimate the probability of death as a function of dose. Shown below is Minitab output from a logistic regression.
$$\begin{array} { l c c c r r r } \text { Coefficients } \\& & & & & \\\text { Term } & \text { Coef } & \text { SE Coef } & 95 \% \text { CI } & \text { Z-Value } & \text { P-Value } & \text { VIF } \\\text { Constant } &- 2.644 & 0.156 & ( - 2.950 , - 2.338 ) & - 16.94 & 0.000 & \\\text { Dose } & 0.6740 & 0.0391 & ( 0.5973,0.7506 ) & 17.23 & 0.000 & 1.00 \\& & & &\end{array}$$

$\begin{array}{l}\text { Odd Ratios for Continuous Predictors } \\\text { Odds Ratio } \quad \quad 95 \% \mathrm{CI} \\\text { Dose } \quad 1.9621 \quad(1.8173,2.1184) \end{array}$


The estimated odds of death at a given level divided by the estimated odds of death at the following level equals = ______.

• A)1.9621
• B)0.6470
• C)0.5097
• D)0.3271
• E)0.3008

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Definitions:

Introspection

The assessment of one's own conscious emotions and thoughts.

Sensory Reactions

The responses or changes in the body resulting from stimulation of the sensory organs, such as sight, hearing, taste, touch, and smell.

Research

The systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.

Association

The connection or linkage between two ideas, concepts, or mental states, often formed through experience or learning.