Single data values (in hours): 3, 1, 4, 5, 5, 2, 2.5, 3.5, 4,
4.5, 0, 2, 2, 2.5, 3.5, 4, 4, 4, 4, 2, 3.5, 3.5, 2, 3, 4, 4, 3, 3,
3, 1
Claim: It was found that the mean time spent watching TV daily
was 4 hours. A researcher claims that he believes the mean time
spent watching TV is truly lower. The mean time spent watching TV
daily is less than 4 hours.
Null Hypothesis:...