Mr. Mehta has chain of restaurants in many of the cities of Northern India and was interested in diversifying his business. His only son, Kamal never wanted to be in hospitality line. To settle him into a line which he wants to venture in, Mr. Mehta decided to venture into garment manufacturing. He gave his idea to his son and he also liked it very much. Kamal has already done a course in fashion designing and wants to do something different for consumers of this industry. An idea stuck him that he should design for people who are bulky but want a lean look after wearing readymade garment. The first thing that came into his mind was to have an estimate of people who wore large size shirts (size 40 and above) and large sized trousers (size 38 and above).

A meeting of experts from garment industry was called and there were many fashion designers to discuss as to how to proceed. A common concern for many of them was how to know size of that market. Another issue that was bothering them was how to know approach the respondents. It was believed that asking people about size of their shirt or trouser might piss them off and there may not be any worthwhile response. A suggestion that came up was that they should employ some observers at the entrance of various malls and their job would be to look at the sizes of the people who wear big size shirt or trouser. This would be a better way of approaching the respondents. This procedure would help them to estimate in a very simple way the portion of people who wear big size garments.

On the basis of the above case let answer the following questions:

1. Name the sampling design/technique that is used in this study

2. What are the limitations of the sampling design chosen?

3. Can you suggest a better sampling design?

4. What is the data collection method employed in the case?

5. Frame any one Null and alternative Hypothesis of this case let.