9.5 Ina ruralsurvey in which the sampling unit is a cluster of M farms, the cost of taking a sample of n units is C= 4:Mn + 60vn where t is the time in hours spent getting the answers from a single...

Extracted text: 9.5 Ina ruralsurvey in which the sampling unit is a cluster of M farms, the cost of taking a sample of n units is C= 4:Mn + 60vn where t is the time in hours spent getting the answers from a single farmer. If $2000 is spent on the survey, the values of n for M =1, 5, 10; 1 =}, 2, work out as follows.