The employee manager of a large company would like to estimate the proportion of full-time employees who prefer adopting plan A of two available

The employee manager of a large company would like to estimate the proportion of full-time employees who prefer adopting plan A of two available health care plans in the forthcoming annual enrollment period.

2. The employee manager believes that if the proportion of employees preferring plan A is less than 15%, then that plan should be dropped. A 95% confidence interval for the proportion of employees preferring plan A yields (15.35%; 19.12%). Based on this interval, what is the manager's decision regarding whether or not to drop plan A?