Questions

Solve the Following Question.(5 Marks)

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6 questions · self-marked practice — reveal the answer and mark yourself.

Question 15 Marks
In a certain sample of 1000 families, 450 families are consumers of tea. Out of 600 Hindu families, 286 families consume tea. Calculate $ϰ^2$ statistic.
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Question 25 Marks
The attitude of 250 employees towards a proposed policy of the company is as observed in the following table. Calculate statistic.

Indiffer-

Oppose

Male

68

46

36

Female

27

49

24

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Question 35 Marks
The following table shows how the samples of Mathematics and Economics scores of 25 students are distributed:

Marks in

Marks in Mathematics

Economics

40-7070-100
40-70

20

15

70-100

5

10

Find the value of statistic.

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Question 45 Marks
Out of a sample of 120 persons in a village, 80 were administered a new drug for preventing influenza, and out of the 18 were attacked by influenza. Out of those who are not administered the new drug, 10 persons were not attacked by influenza:
(i) Prepare a two-way table showing frequencies.
(ii) Compute the $x^2$ square statistic.
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Question 55 Marks
A sample of men and women who had passed their driving test either in 1st attempt or in 2nd attempt
were surveyed. Compute $ϰ^2$ statistic.
Paseed in
First attempt second attempt
Men 32 28
Women 8 12
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Question 65 Marks
200 teenagers were asked which takeaway food do they prefer – French fries, burgers, or pizza. The results were-
  French fries burger Pizza
Boys 6 20 24
Girls 18 40 92
Compute $ϰ^{2}$ statistic.
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