SOLUTION: A random sample of 25 laboratory mice was taken. The mean weight for this sample is 33gm with a sample standard deviation of 5gm. Using 0.05 significance level, test the claim th

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Question 1181944: A random sample of 25 laboratory mice was taken. The mean weight for this sample is 33gm
with a sample standard deviation of 5gm. Using 0.05 significance level, test the claim that the
average weight of the mice is 30gm
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Ho: mu is 30 gm
Ha: mu NE 30 gm
alpha p{reject Ho|Ho true}=0.05
test is t (0.975, df=24)
critical value is reject for |t| > 2.064
t=(33-30)/5/sqrt(25)
=3
reject Ho: the mean is not 30 gm, it is larger.
p-value=0.012.