I do not understand this review question

Chapter 6, Section 3-CI, Exercise 154 Survival in the ICU and Infection In the dataset ICUAdmissions, the variable Status indicates whether the ICU (Intensive Care Unit) patient lived (O) or died (1), while the variable Infection indicates whether the patient had an infection (1 for yes, 0 for no) at the time of admission to the ICU. Use technology to nd a 95% confidence interval for the difference in the proportion who die between those with an infection and those without. (PI PN) Click here for the dataset associated with this question. Round your answers to three decimal places. Condence interval : to