7.6 A one-sample t test. The one-sample t statistic for testing H0: =8Ha: >8 from a sample of n=22 observations has the value t=2.24 .

7.6 A one-sample t test. The one-sample t statistic for testing H0: μ=8Ha: μ>8 from a sample of n=22 observations has the value t=2.24 .

a. What are the degrees of freedom for this statistic?

b. Give the two critical values t* from Table D that bracket t.

c. Between what two values does the P-value of the test fall?

d. Is the value t=2.24 significant at the 5% level? Is it significant at the 1% level?

e. If you have software available, find the exact P-value.