Question 1075161
Ho: watch same amount or more.
Ha: watch less
alpha = 0.01 P{reject Ho|Ho true}
test stat is a t(x bar-mean)/s/sqrt (n)
critical value: t <-2.861 with df=29
t=(27-29.4)/(2/sqrt (n)
=-2.4*sqrt(30)/2
=-6.57
Strongly reject Ho and there is evidence they watch fewer hours than the general public.