If the overall impact of deterministic part is less than the overall impact of random part in the regression equation then it means that the quality of predictions from such a regression will be efficient.a.Falseb.True

The Deterministic part of the regression line is always a fixed number even if we calculate it for different values of the independent variable.a.Falseb.True

Which of the following is not a Deterministic effect?

A group of scientists wants to determine the efficacy of a vaccine. To do so they recruited 1000 subjects. Two months ago 300 random subjects received the vaccine T=1 . The other 700 received a placebo T=0 . The scientist also measured if the subjects became infected with the virus Y=1 or not Y=0 in the last 2 months. They plan to test the efficacy of the vaccine by running the following regression: Y=β0+β1T+u Which of the following statements is FALSE: Question 6Select one: a. This model will generate biased estimates because it does not control for many omitted variables b. The fact that more people receive the placebo than the vaccine will not generate bias c. Scientists do not need to observe the initial health status of the subjects to get unbiased estimates because the assignment of the vaccine was random d. A negative β1 would indicate that the vaccine is effective

A group of scientists wants to determine the efficacy of a vaccine. To do so they recruited 1000 subjects. Two months ago 300 random subjects received the vaccine T=1 . The other 700 received a placebo T=0 . The scientist also measured if the subjects became infected with the virus Y=1 or not Y=0 in the last 2 months. They plan to test the efficacy of the vaccine by running the following regression: Y=β0+β1T+u Which of the following statements is FALSE: Question 6Select one: a. This model will generate biased estimates because it does not control for many omitted variables b. The fact that more people receive the placebo than the vaccine will not generate bias c. Scientists do not need to observe the initial health status of the subjects to get unbiased estimates because the assignment of the vaccine was random d. A negative β1 would indicate that the vaccine is effective Question 7

Speed-accuracy tradeoffs pose a problem wheneverQuestion 7Answera.error rates are not systematically related to the independent variable.b.there is no effect of the independent variable.c.error rates increase as reaction time decreases.d.error rates increase as reaction time increases.