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

question 39

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.
Coefficients
Term Coef SE Coef 95% CI Z-Value P-Value VIF
Constant -2.644 0.156 (-2.950,-2.338) -16.94 0.000
Dose 0.6740 0.0391 (0.5973,0.7506) 17.23 0.000 1.00
Odd Ratios for Continuous Predictors
Odds Ratio 95% CI
Dose 1.9621 (1.8173,2.1184)
The predicted probability that an insect will die when exposed to the second dose is ____.

• A) 0.1246
• B) 0.1446
• C) 0.1857
• D) 0.2737
• E) 0.2945

---

Definitions:

Lateralization

The tendency for some neural functions or cognitive processes to be specialized to one side of the brain or the other.

Neurogenesis

The process of generating new neurons in the brain, which occurs in certain brain regions and plays a role in learning and memory.

Synaptogenesis

The formation of synapses between neurons in the nervous system, crucial for brain development, learning, and memory.

Hemispheric Dominance

A process in which one hemisphere becomes stronger and more adept than the other.