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A hypothesis test involves a comparison of which two elements? a. research results from a population...

A hypothesis test involves a comparison of which two elements?

a. research results from a population and a hypothesis about a sample.
b. research results from a sample and a hypothesis about a population
c. research results from a population and a hypothesis about the population.
d. research results from a sample and a hypothesis about the sample.

How does sample variance influence the estimated standard error and measures of effect size such as r^2 and Cohen d?
a. larger variance decreases the standard error but increases measures of effect size.
b. larger variance increases the standard error but decreases measures of effect size.
c. larger variance increases both the standard error and measures of effect size.
d. larger variance decreases both the standard error and measures of effect size.

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