A Researcher Wishes to Test $$H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 0$$

Essay

A researcher wishes to test
$$H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 0$$
versus $H _ { a } : \mu _ { 1 } - \mu _ { 2 } \neq 0$
.A sample of 50 observations from each population yields $\bar { x } _ { 1 }$
= 60 and $\bar { x } _ { 2 }$
= 52.If $\sigma _ { 1 }$
= 10 and $\sigma _ { 2 }$
= 8,compute Cohen's d.