question #3 chapter 13

The following statistics are computed by sampling from three normal populations whose variances are equal: Use Table 2 and Table 5.

= 19.8, n1 = 4; = 24.0, n2 = 10; = 28.0, n3 = 6;MSE = 27.8

a.

Use Fisher’s LSD test to determine which population means differ at 95% confidence intervals. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)

Population Mean
DifferencesConfidence IntervalCan we conclude that the population means differ?μ1 − μ2[, ] (Click to select)NoYesμ1 − μ3[, ] (Click to select)YesNoμ2 − μ3[, ] (Click to select)YesNo

b.

Repeat the analysis with Tukey’s HSD approach. (If the exact value for nT – c is not found in the table, use the value which is closer. Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)

Population Mean
DifferencesConfidence IntervalCan we conclude that the population means differ?μ1 − μ2[, ] (Click to select)YesNoμ1 − μ3[, ] (Click to select)YesNoμ2 − μ3[, ] (Click to select)YesNo