A one-sample t test. The one-sample t statistic for testing H0:  5 10 Ha:  . 10 from a sample of n 5 16 observations has the value t 5 2.23.

(a) What are the degrees of freedom for this statistic?

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

(c) What are the right-tail probabilities p for these two entries?

(d) Between what two values does the P-value of the test fall?

(e) Is the value t 5 2.23 significant at the 5% level? Is it significant at the 1% level?

(f) If you have software available, find the exact P-value.