food safety was in the news in china constantly last year due to Sanlu's contaminated baby milk formula, which killed at least six children and poisoned 300000 more.

The shadow of the baby formula scandal last year still lingers, and quite a number of consumers are still afraid of drinking milk or eating dairy products. With melamine exposed as a non-edible substance added to some food, consumers cannot be sure what other inedible products are being used.

1.specify the management dilemma, the management questions and the research questions of this research

2.select one quantitative technique that could be used in the initial exploratory study. Give reasons for your selection and briefly describe the research process

qualitative techniques

reasons

research process

3.decide whether you would use a personal interview, telephone interview or self-administered survey (mail, e-mail or online) in the formal research stage. Design your contact method of sampling method and survey process

administration/ contact method

sampling method

survey process

4.one of the purposes of the sample survey is to determine the monthly average amount of il consumed by a Chinese family. The following standards have been set: a confidence level of 95%(z=1.96) and an error of plus or minus 0.5 litres. And past research has indicated that the standard deviation should be 3 litres. What the required sample size should be 3 litres. What the required sample size should be?

5.In your chosen method, what are the major error sources? Figure out at least three sources of research error.

just need how to answer this type of questions