Question: 13. The following data are from a completely randomized design. Treatment A Treatment B Treatment C 32 44 33 30 43 36 30 44 35

13. The following data are from a completely randomized design.

Treatment A

Treatment B

Treatment C

32 44 33 30 43 36 30 44 35 26 46 36 32 48 40 Sample mean 30 45 36 Sample variance 6.00 4.00 6.50

a. At the a = .05 level of significance, can we reject the null hypothesis that the means of the three treatments are equal?

b. Use Fisher’s LSD procedure to test whether there is a significant difference between the means for treatments A and B, treatments A and C, and treatments B and C. Use a = .05.

c. Use Fisher’s LSD procedure to develop a 95% confidence interval estimate of the difference between the means of treatments A and B.

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