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A national education authority wants to estimate average class size in private schools. The country has 1,200 private schools:
- Northern region: 240 schools (20%)
- Central region: 480 schools (40%)
- Southern region: 360 schools (30%)
- Western region: 120 schools (10%)
A stratified random sample of 300 schools is drawn, with allocation proportional to region size. How many schools should be sampled from the Central region?
A national education authority wants to estimate average class size in private schools. The country has 1,200 private schools:
- Northern region: 240 schools (20%)
- Central region: 480 schools (40%)
- Southern region: 360 schools (30%)
- Western region: 120 schools (10%)
A stratified random sample of 300 schools is drawn, with allocation proportional to region size. How many schools should be sampled from the Central region?