Question: Refer to Exercise 18 in Section 9.1. a. Use the Fisher LSD method to find a 95% confidence interval for the difference between the means

Refer to Exercise 18 in Section 9.1.

a. Use the Fisher LSD method to find a 95% confidence interval for the difference between the means for annularly threaded and smooth shank nails.

b. Use the Tukey??Kramer method to determine which pairs of nail types, if any, differ at the 5% level.

Refer to Exercise 18 in Section 9.1.

Nail Type Withdrawal Strength (N/mm) Annularly threaded Helically threaded Smooth shank 36.57

Nail Type Withdrawal Strength (N/mm) Annularly threaded Helically threaded Smooth shank 36.57 29.67 43.38 26.94 12.03 21.66 41.79 31.50 35.84 40.81 14.66 24.22 23.83 21.80 27.22 38.25 28.15 36.35 23.89 28.44 12.61 25.71 17.69 24.69 26.48 19.35 28.60 42.17 25.11 19.98

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a t 27025 2052 MSE 69171 The sample means are X 1 32019 and X 3 24239 The sam... View full answer

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