A consumer product magazine recently ran a story concerning
A consumer product magazine recently ran a story concerning the increasing price of VCR\'s. The story stated that VCR prices dipped in the early 1990\'s but now are beginning to skyrocket in price. According to the story, the average price of a VCR in 1992 was $220. use the statistix printout shown below to answer the following question regarding this story
One-Sample T Test f or VCR Price
Null hypothesis: Mu=220
Alternative Hyp: MU>220
Mean: 250.23
STD error: 15.62
Mean - Ho 30.23
T 1.935
DF 19
O .0340
Cases included: 20
Find the rejection region appropriate is we are using t-test with = 0.05
Solution
Critical Value
The Value of |t | with n-1 = 19 d.f is 1.729
Rejection region would be to > 1.729
