In the article “Racial Disparities in Route of Hysterectomy for Benign Indications Within an Integrated Health Care System” published in JAMA Network Open (Zaritsky, et al., 2019), the authors reported the odds ratio from a logistic regression model for individuals receiving a minimally invasive hysterectomy for Hispanics in 2015 of ˆ???????? = 1.28 with a 95% confidence interval of 0.85 to 1.97.

(a) Determine the estimated slope for the dummy variable Hispanic in a logistic regression model.

(b) Is there sufficiently strong statistical evidence to conclude that the odds ratio for Hispanics is not equal to 1? Explain.