1. Use the figure below to answer the questions that follow. The figure shows the results of a recent Marist poll asking about President Biden's approval rating. The range of the confidence interval for these data points is 4.3%. For example, the first row shows that among all adults in the nations, 42% approve of Biden's work. This means that confidence intervals for this result would be approximately (38, 46).

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1. The figure shows that people with less income are more likely to approve of Biden's work than people with higher income. Is this result statistically significant given the width of the confidence interval? Explain.

2. The figure shows that people with more education are more likely to approve of Biden's work than people with less education. Is this result statistically significant given the width of the confidence interval? Explain.

BIDJP105. NPR/Marist Poll National Tables November 16th through November 19th, 2021 National Adults Do you approve or disapprove of the job Joe Biden is doing as president? Approve Disapprove Vol: Unsure Row % Row % Row % National Adults 12% 50% 8% National Registered Voters 13% 50% 7% Party Identification Democrat 81% 10% 9% Republican 3% 93% 4% Independent 14% 49% 7% Region Northeast 50% 44% 6% Midwest 44% 49% 7% South 35% 56% 9% West 45% 47% 9% Household Income Less than $50,000 42% 10% $50,000 or more 41% 53% 7% Education Not college graduate 39% 5% 7% College graduate 17% 4% 9% Race/Ethnicity White 36% 55% 9% Non-white 52% 42% 6% Race and Education White - Not College Graduate 28% 61% 10% White - College Graduate 46% 46% 7% Gender - Race - Education Men - White - Not College 22% 69% 8% Graduate Men - White - College 40% 5% 5% Graduate Women - White - Not College 33% 55% 12% Graduate Women - White - College 55% 35% 10% Graduate Age Under 45 39% 50% 12% 45 or older 44% 51% 5% Generation Gen Z/Millennials (18-40) 10% 49% 11% Gen X (41-56 38% 55% 7% Baby Boomers (57-75) 16% 49% 5% Silent-Greatest (Over 75) 46% 47% 7% Gender Men 36% 18% 6% Women 48% 43% 10% White Evangelical Christians 21% 72% 7% 2020 Support Biden 81% 10% 9% Trump 2% 16% 2% Area Description Big city 19% 45% 6% Small city 42% 48% 10% Suburban 44% 46% 10% Small town 34% 59% 8% Rural 37% 57% 6% Small city/Suburban Men 37% 56% 7% Small city/Suburban Women 49% 39% 12% NPR/Marist Poll National Adults. Interviews conducted November 16th through November 19th, 2021. Totals may not add to 100% due to rounding