Essentials of Biostatistics in Public Health, Fourth Edition Chapter 9 Question 21 Essentials of Biostatistics in Public Health, Fourth Edition 9.7 Practice Problems 21. A study evaluated predictors of perceived risk of infection with COVID19 (the outcome) by generational birth cohort (the primary independent variable), gender, race/ethnicity, urbanicity, family income, and political affiliation. The regression coefficients from the multiple linear regression model associated with generational birth cohort are summarized here, with Millennials (24-39 years of age) considered the reference group: Gen X ( 40 55 years of age) 7.1 ( 95% Cl : 12.6 , 1.5 ) , Baby Boomers (56-74 years of age) 10.6 (95\% Cl: 16.2 , 5.0 ) . Which of the following is not true? a. There is a statistically significant difference in perceived risk of infection with COVID-19 between Gen X and Millennials. b. There is a statistically significant difference in perceived risk of infection with COVID-19 between Baby Boomers and Millennials. c. There is a statistically significant difference in perceived risk of c. There is a statistically significant difference in perceived risk of infection with COVID-19 by generation birth cohort. d. There is a statistically significant difference in perceived risk of infection with COVID-19 between Gen X and Baby Boomers..