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For their class project, a group of Statistics students decide to survey the student body to assess opinions about the proposed new student center. Their sample of 200 contained 50 first-year students, 50 sophomores, 50 juniors, and 50 seniors. a) Do you think the group was using an SRS? Why? b) What sampling design do you think they used?

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Answer:

a. No

b. Stratified Random Sampling was used

Step-by-step explanation:

a. No, I don't think the group was using a simple random sampling SRS ,because statistician students takes a survey of 200 samples and the sample was distributed into different categories , which is unlikely to happen in simple random sampling.

b. I think stratified random sampling was used because this type of sampling requires the population strata to be made.

In the question, the population is 200 and it is distributed into 4 strata which are :50 first-year students, 50 sophomores, 50 juniors, and 50 seniors.

Thus, the stratified random sampling was used

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