Statistical Power:

(a) Consider a test of the H₀­: m_T = m_B­ vs. H_A: m_T ¹ m_B­. Use Minitab or R to find the power of the a=.05 test if n_T = 30 and m_T is larger than m_B­ by 5 points. Assume that the true standard deviation of the differences s_D = 30. Do not use the Minitab Power and Sample size menu item – use the cumulative distribution function command, or use R’s pt() function.

(b) Construct a well-labeled plot featuring overlaid power curves (power vs. m_D) for n_T =20, 40, 60 for the a=0.05 test of part (a), assuming s_D =30. Label this as though it will be featured in the report to the engineers.

Price: $24.95

Solution: The downloadable solution consists of 5 pages, and 266 words
Deliverable: Word Document and pdf