SOLUTION: 1. A national magazine claims that the average college student watches less television than the general public. The national average is 29.4 hours per week, with a standard deviat

Question 1075161: 1. A national magazine claims that the average college student watches less television than the general public. The national average is 29.4 hours per week, with a standard deviation of hours. A sample of 30 college students has a mean of 27 hours. Is there enough evidence to support the claim at ?
Make a decision regarding Ho

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
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.
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