The one-sample t statistic for testing H0: = 20 Ha: < 20 based on n = 13 observa

Question

The one-sample t statistic for testing

H0: = 20

Ha: < 20

based on n = 13 observations has the value t = 2.54.

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

(b) Between what two values does the P-value of the test fall? (You may use the t distribution critical values table.) 0.005 < P < 0.01

0.01 < P < 0.02

0.02 < P < 0.025

0.025 < P < 0.05

0.05 < P < 0.1

(c) If you have software available, find the exact P-value. (Round your answer to four decimal places.)

Explanation / Answer

a)

degrees of freedom = n -1 = 13 -1 = 12

b)

p value from test statistics is 0.01296915.

0.01 < p < 0.02

c)

Exact p value = 0.0130 ( rounding to four decimal places)

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.