1 The onesample t statistic for testing H0Solutiona Df n1

1. The one-sample t statistic for testing H0:

Solution

a) Df = n-1 = 20-1 = 19

2) When t = 1.84, df = 19

p value at 0.05 level one tailed = 0.4072

and two tailed = 0.8144

3) As p value for one tailed is 0.4072,

is greater than 1%. Hence not significant at 1% level

But <5%. Hence significant at 5% level.