Answer: Stratified random sampling
Explanation:
Given : The manager of the customer service division of a major consumer electric company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products. If there are 4 different brands of Blu-ray players made by the company.
The best sampling strategy which we can use is stratified random sampling because it is not much costly and also it induces the efficiency . We can me different strata according to the 4 brands , then we can randomly select participants for the sample.
- Stratified random sampling is a method of probability sampling in which a researcher divides the entire population into multiple homogeneous groups known as strata and then he randomly select an sample members from each strata for research .
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Answer:
True
Explanation:
Marginal - the dictionary meaning of such word is additional of anything. Here, in the given case, marginal analysis as per costing is the analysis of each additional revenue from each additional sale or production.
Marginal analysis does not consider fixed cost generally, as that is fixed and don not add on on additional units, within a standard range.
Thus, the statement stated here is True.
