A newspaper has 39800 subscribers served by carrier routes. The purpose of the survey is to find out how many of the subscribers own their homes. An interview survey oi about 400 subscribers is wanted, in clusters of 10 subscribers each. The results of the 40 clusters, which is the number oi homeowners in each cluster of lo households are: ' O, 4. 3. 1. 2. 3, 4, 0, 6 5 5 9 6 4 poo \"can PM 1 9 3| ! I | 0 9 (a) Estimate the mean number of subscribers who own their own homes and the standard error of the estimate. (10) (b) Estimate the total number of subscribers who own their own homes and the standard error of the estimate. (5) [15]