In a recent study on teacher perceptions of the behavior of elementary school ch

Question

In a recent study on teacher perceptions of the behavior of elementary school children, teachers rated the aggressiveness behavior of a sample of 10,640 school children by responding to to the statement" The child threathens or bullies others in oder to get his/her own way. "Respnses were measured on a scale from 1(never) to 5 (always). Summary statistics for the sample of 10,640 children were reported as x=2.21 and s=0.88. Let u represent the mean population of all school children. Suppose you want to test H0:u=3 agaisnt Hau/=3.

Explanation / Answer

Sample size n = 10640

H0: mu = 3

Ha: mu not equal to 3

x bar = 2.21

s = 0.88

Z statistic = -0.8977

p value = 0.3692

Let alpha = 0.05

Since p >0.05 accept null hypothesis that mean = 3.

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