Question 1131481
Ho: mean is 500 m or fewer
Ha: mean is > 500 m
This is a t statistic with t df=11 0.95=1.796, which is the critical value
t=(x bar-mean)/s/sqrt(n)
=24/23/sqrt(12)
=3.615
This is greater than the hypothesis that mean is <=500 m, so we reject Ho and conclude the mean is in fact greater than 500 m (one way test) p-value is 0.002