"Cristy Care Services" and "TuCuido" are two companies located in the center of Puerto Rico. Both plan to offer a joint care center service for the children of their employees, and as part of the feasibility study of the project, they want to calculate the average cost per week for child care. Taking a sample of 10 employees who frequently use the service indicates the following amounts spent in the recent week.

(Dollars $) 107 ; 92; 97; 95; 105; 101; 91; 99; 95; 104

Answer:

a. Calculate the 90% confidence interval of the population mean and interpret the result.