5. (5 points) Taking a random sample from a population allows us to: a) Construc

Question

5. (5 points) Taking a random sample from a population allows us to: a) Construct a null distribution. b) Determine cause and effect. c) Generalize our results from a test of significance to the population. d) Obtain a narrow confidence interval 6. (5 points) A confounding variable is: a) Associated with just the response variable. b) Associated with just the explanatory variable. c) Associated with both the explanatory and response variable. d) Associated with neither the explanatory nor response variable. 7. (5 points). Which of the following will NOT help control bias in a survey? a) A random sample. b) A large sample size. c) A very high participation rate d) Well worded questions.

Explanation / Answer

(5) Option C is correct.
We carry out test of hypotheses on a random sample, which has been taken from a population. After carrying out the tests, we make an inference on the population parameters.

(6) Option C is correct.
The counfounding variable affects both the explanatory and the response variable.

(7) Option C is correct.
Rest of the options are known to control bias in a survey.

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