# Statistics testing : proportion test of soft drinks by ClassOf1

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```									              Sub: Statistics                                                                             Topic: Testing

Question:
Compare the response for the “Preference of soft-drinks” based on gender
by the use of two proportion test
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Sample at least 15 people and record their data in a simple table or chart; study the examples
from Unit 12-3.

Solution:
In order to test the above hypotheses, the sample has been collected based on email survey.
The sample information has been obtained by the use of following questionnaire:

Questionnaire

1. Name:

2. Age:

3. Gender:

4. Income:

5. Which soft-drinks would you prefer to drink?                      (1) Coke      (2) Pepsi-Cola (3) No
preference

6. Whether you are giving importance to Quality of the product?

(1) Strongly Disagree (2) Disagree (3) Neutral (4) Agree (5) Strongly Agree

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*The Homework solutions from ClassOf1 are intended to help the student understand the approach to solving the problem and not for submitting the same in
Sub: Statistics                                                                             Topic: Testing

7. Whether price should be the deciding criteria?    Yes / No
Using the above questionnaire, the information has been gathered from a sample of 80 people
using email survey.

The sample data has been classified according to gender, age, income, etc and is tabulated
below:

Table-I

Preference
Importance       Price Should be the
of Product
Sample No.        Income      Gender Age                             to Quality      deciding criteria (Y /
(Coke or
(1 - 5)                N)
Pepsi-Cola)

1             2484          F        35         Coke                1                      1

2             3994          M        40         Coke                3                      1

3             3737          M        37         Coke                4                      0

4             4300          M        30         Coke                4                      1

5             3123          F        38      Pepsi-Cola             2                      0

6             3276          F        42         Coke                2                      1

7             3166          F        48      Pepsi-Cola             5                      0

8             3500          F        49         Coke                2                      0

9             3200          F        45         Coke                5                      0

10             3385          F        33         Coke                5                      1

11             3202          F        36      Pepsi-Cola             5                      0

12             2928          F        38         Coke                3                      1

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*The Homework solutions from ClassOf1 are intended to help the student understand the approach to solving the problem and not for submitting the same in
Sub: Statistics                                                                             Topic: Testing

13             3002          F        41      Pepsi-Cola             2                      0

14             5110          M        29         Coke                5                      0

15             2787          F        43          NA                 3                      0

16             3251          F        47         Coke                5                      0

17             4359          M        28         Coke                4                      0

18             3180          F        48      Pepsi-Cola             4                      0

19             3186          F        29         Coke                3                      0

20             2568          F        31         Coke                3                      0

21             3259          F        31      Pepsi-Cola             5                      0

22             3452          F        36          NA                 5                      1

23             3244          F        30      Pepsi-Cola             5                      1

24             3632          M        40      Pepsi-Cola             3                      0

25             3752          M        48         Coke                4                      0

26             3547          F        50      Pepsi-Cola             5                      1

27             4271          M        30         Coke                5                      0

28             3663          M        35         Coke                2                      1

29             3222          F        35      Pepsi-Cola             2                      1

30             3381          F        37          NA                 5                      0

31             3362          F        32      Pepsi-Cola             4                      1

32             2532          F        33         Coke                4                      0

33             2696          F        40         Coke                5                      0

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*The Homework solutions from ClassOf1 are intended to help the student understand the approach to solving the problem and not for submitting the same in
Sub: Statistics                                                                             Topic: Testing

34             3556          F        41         Coke                3                      1

35             3809          M        46         Coke                5                      0

36             3581          M        49         Coke                3                      0

37             3190          F        45          NA                 4                      0

38             4109          M        50         Coke                5                      0

39             3800          F        46         Coke
```
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