Question: A final one-sample t test. The one-sample t statistic for testing H0: = 20 Ha: < 20 based on n = 115 observations has the

A final one-sample t test. The one-sample t statistic for testing H0:μ = 20 Ha:μ < 20 based on n = 115 observations has the value t = −1.55.

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

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

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

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