Verbal IQ Scores Example 1 in this section used performance IQ scores from Data Set 5 in Appendix: Data Sets for two-way analysis of variance with the factors of sex (male, female)

and measured blood lead level (low, medium, high). If we use the verbal IQ scores with those same factors, we get the accompanying results. Use the displayed results and use a 0.05 significance level. What do you conclude?

Transcribed Image Text:

MINITAB Two-way ANOVA: VERBAL versus SEX, LEAD Source SEX LEAD DF ss MS E P 1 700.83 700.833 4.58 0.043 2 42.47 21.233 0.14 0.871 321.27 160.633 1.05 0.365 Interaction Error Total 2 24 3670.40 152.933 29 4734.97