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Question 1: There are 180 primary schools in a country area having an average of 30 or...

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Advance Math

Question 1:

There are 180 primary schools in a country area having anaverage of 30 or more people under the age of 21 per class. Asample of 30 schools drawn using systematic sampling with aninterval of k = 6.

Serial number

1

2

3

4

5

6

   7

8

9

10

No. of students

60

200

45

50

40

79

35

41

30

120

Serial number

11

12

13

14

15

16

17

18

19

20

No. of students

300

65

111

120

200

42

51

67

32

40

Serial number

21

22

23

24

25

26

27

28

29

30

No. of students

46

55

250

100

63

90

47

82

31

50

  1. Estimate total number of students.
  2. Estimate average number of students per farm.
  3. The variance of the sample mean of students per farm.
  4. 95% confidence interval for the total number of students.

Answer & Explanation Solved by verified expert
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There are 180 primary schools in a country area having anaverage of 30 or more people under the age of 21 per class Asample    See Answer
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