Question
Download Solution PDFA sample of 60 students is to be selected from a population of 480 students belonging to 3 different schools.
| School | Ni (Total No. of Students) | Ni (sample size) |
| A | 120 | n1 |
| B | 200 | n2 |
| C | 160 | n3 |
Drawing a sample using proportional allocation technique would give n1, n2, n3 as
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven
Total number of students to be selected = 60
Size of the population = 180
Calculation
n1 = (60/480) × 120
⇒ 15
n2 = (60/480) × 200
⇒ 25
n3 = (60/480) × 160
⇒ 20
∴ The value of n1, n2, and n3 are 15, 25, 20
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