1-With an obtainedtof 2.94 exceeding a criticaltvalue of 2.78 at .05 we would conclude:

Select one:

a.that we need the degrees of freedom to make a decision

b.that we should accept the alternate hypothesis

c.that we should accept the null hypothesis

d.that the effect size was large

2-The power of a statistical test can be improved by:

Select one:

a.increasing measurement error

b.adjusting thepcriterion from .01 to .05

c.random sampling

d.decreasing the effect size

3-A researcher calculated a correlation between work hours (mins.) and awakening cortisol secretion in saliva in a sample of nurses. The results werer= .33,p =.022.

This means:

Select one:

a.the effect size was medium but the significance was low

b.The correlation was non-significant

c.as hours of work increased cortisol secretion decreased

d.there is a medium positive correlation between cortisol secretion and hours worked