Is there sufficient evidence to conclude that there is a mean difference in mile time for...

Is there sufficient evidence to conclude that there is a mean difference in mile time for runners when they had coffee with breakfast vs without?

PAIRED SAMPLES TEST

Pair 1 coffee-nocoffee

Mean=-.31585

Std. Deviation= .52660

Std. Error mean=.08326

Lower=-.48427

Upper= -.14744

t= -3.793

df=39

Sig. (2-tailed)=.001

a. Should they reject or retain? Give numerical justification

b. Calculate the effect size

c. Interpret the effect size in the context of the situation

Solutions

Expert Solution

milcah answered 7 months ago

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