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Abdul-Rahim Taysir
Population Variance :
First find mid points (M)
Variance :
Population variance is 76.22
Que.2
n = 60
Z score :
Z = 2.74
Find P value Using z table or use excel command =NORMSDIST(2.74)
P( Z< 2.74) = 0.9969
2*P( Z>2.74 ) =2*(1-P( Z< 2.74) )=2*(1- 0.9969)=2*0.0031= 0.0062
Answer : For two tailed test p value is 0.0062
Z table:
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