A researcher reports that the mean time it takes to complete an experimental task is 1.4±8.0 (M±SD)seconds.If the null hypothesis was that the mean equals 1.0,then what is the effect size for this test using estimated Cohen's d?
A)d = 0.05;small effect size
B)d = 0.50;medium effect size
C)d = 1.05;large effect size
D)There is not enough information to answer this question.

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The Answer of A researcher reports that the mean time it takes to complete an experimental task is 1.4±8.0 (M±SD)seconds.If the null hypothesis was that the mean equals 1.0,then what is the effect size for this test using estimated Cohen's d?
A)d = 0.05;small effect size
B)d = 0.50;medium effect size
C)d = 1.05;large effect size
D)There is not enough information to answer this question.

A Researcher Reports That the Mean Time It Takes to Complete