e e (ale :9 e'ei__ :work: Chapter 8 (Sections 8.1 through 0 Saved Help Save & Exit Submit Check my work Of 45 bank customers depositing a check, 21 received some cash back. (3) Construct a 90 percent condence Interval for the proportion of all depositors who ask for cash back. (Round your answers to 4 decimal places.) The 90% condence interval is from ES