According to the Bureau of the Census, 39% of U.S. adults in the $20,001–$35,000 income group participated in adult education during the most recent reporting year. Data for this and other groups are shown here.

                                                                    Percentage Who Participated
                        Income Group                         in Adult Education
                        $20,001–$35,000                                 39%
                        $35,001–$50,000                                 48%
                        $50,001–$75,000                                 56%

Assuming independent samples of 1000 for each of these income groups, use the 0.10 level of significance in testing the null hypothesis that π₁ = π₂ = π₃.