According to the Bureau of the Census, 36% 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.

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.

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Percentage Who Participated in Adult Education Income Group $20,001-535,000 $35,001-550,000 $50,001-575,000 36% 42% 48%