Statistics: Analysis of Variance (ANOVA) – #400


Question: Systolic Blood Pressure in Different Age Groups. A random sample of 40 women is partitioned into three categories with ages of below 20, 20 through 40, and over 40. The symbiotic blood pressure levels are obtained from Data Set 1 in Appendix B. The analysis of variance results obtained from Minitab are shown below.

Source Df SS MS F P
Factor 2 938 469 1.65 0.205
Error 37 10484 283
Total 39 11422

a. What is the null hypothesis?

b. What is the alternative hypothesis?

c. Identify the value of the test statistic.

d. Identify the P-value.

e. Is there sufficient evidence to support the claim that the means for the different laboratories are not all the same?

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