Refer to Exercise 1 in Section 9.1. A scientist wants to
Chapter 9, Problem 6E(choose chapter or problem)
Refer to Exercise 1 in Section 9.1. A scientist wants to determine whether the mean strength of specimens cured at \(30^{\circ} \mathrm{C}\) differs from the mean strengths of specimens cured at \(0^{\circ} \mathrm{C}, 10^{\circ} \mathrm{C},\text{ and }20^{\circ} \mathrm{C}\).
a. Use the Bonferroni method to determine which of the means, if any, for \(0^{\circ} \mathrm{C}, 10^{\circ} \mathrm{C},\text{ and }20^{\circ} \mathrm{C}\) differ from the mean for \(30^{\circ} \mathrm{C}\). Use the 5% level.
b. Use the Tukey–Kramer method to determine which of the means, if any, \(0^{\circ} \mathrm{C}, 10^{\circ} \mathrm{C},\text{ and }20^{\circ} \mathrm{C}\) differ from the mean for \(30^{\circ} \mathrm{C}\). Use the 5% level.
c. Which is the more powerful method to find all the treatments whose means differ from that of the \(30^{\circ} \mathrm{C}\) temperature, the Bonferroni method or the Tukey–Kramer method?
Equation Transcription:
Text Transcription:
30^{o}C
0^{o}C, 10^{o}C, and 20^{o}C
0^oC, 10oC, and 20^{o}C
30^{o}C
0^{o}C, 10^{o}C, and 20^{o}C
30^{o}C
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