Final answer:
This is seeking a numerical value for the threshold at which facilities licensed to serve residents must have menus planned. This relates to health regulations for residential facilities but the exact number required to complete the statement is not provided within the question itself.
Step-by-step explanation:
This pertains to regulations for facilities that are licensed to serve a certain number of residents. In this context, the blank in the question likely needs to be filled with a numerical value that defines the minimum number of residents for which a facility must plan with written menus. The completion of the statement would be specific to regulations or standards set by a governing body or an accreditation organization. Facilities such as these could be assisted living, long-term care, or other types of residential facilities where providing meals is part of the services offered. The requirement to have menus written at least one week in advance helps ensure appropriate meal planning and procurement of resources. Without a specific number to complete the sentence or additional context, it remains an incomplete regulation statement. Regarding the reference provided, the confidence interval for the true mean number of meals that students eat out in a week is mentioned but the numerical range has not been provided. This may be an unrelated statistic or missing information necessary to complete the answer accurately.