A study followed the relationship between diet and exercise on blood pressure (S

Question

A study followed the relationship between diet and exercise on blood pressure (SBP). The table below gives mean blood pressure for one subject with high level of exercise and one subject with low level of exercise.

Year

Species -

Vegan

Species -

Vegetarian

Species -

Normal

Low

109

135

128

High

103

105

119

a). Obtain the Anova table assuming an additive model with one replicate per cell

b). Calculate least square means

c). Perform a tukey 1 degree of freedome test for interaction

d). Use Scheffe method to determine which groups diet groups have different SBP.

Year

Species -

Vegan

Species -

Vegetarian

Species -

Normal

Low

109

135

128

High

103

105

119

Explanation / Answer

Using MINITAB

Choose Stat>>ANOVA>>One Way then

Select Response data are in seperate column for each factor level.

then click ok

Method

Equal variances were assumed for the analysis.

Factor Information

a]

Analysis of Variance

Model Summary

b]

Means

Pooled StDev = 13.0192

c]

Tukey Pairwise Comparisons

Grouping Information Using the Tukey Method and 95% Confidence

Means that do not share a letter are significantly different.

Null hypothesis All means are equal Alternative hypothesis Not all means are equal Significance level = 0.05

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