can anyone help with this question (1)

a) A sociological study conducted in a small town called for the estimation of the proportion of households that contain at least one member over 65 years of age. The city has 621 households according to the most recent city directory. A simple random sample of n = 60 households was selected from the directory. At the completion of the fieldwork, out of the 60 households sampled, 1 1 contained at least one member over 65 years of age. Estimate the true population proportion, p, of households with at least one member over 65 years of age and place a bound on the error of estimation. 141