Question 1188005
One tailed test
alpha=0.01 p{reject Ho|Ho true}
test statistic is a t (0.99, df=11)
critical value is t<-2.718
t=(9.2-10)/1.2/sqrt(12)
=-0.8*sqrt(12)/1.2
=-2.31
fail to reject Ho; insufficient evidence to reject Ho at 1% level.
p-value=0.021