(5 points) 3) a) Widths of the doors in a restaurant are an example of which typ

Question

(5 points) 3) a) Widths of the doors in a restaurant are an example of which type of data? i) Neither i) Discrete l) continuous b) A gas station owner wants to identify if her customer base is shrinking. Determine whether an observational or experimental study is appropriate to address the statement above. c) A police chief analyzes ten newspaper articles about crime prevention. Classify this scenario as a meta-analysis or a case study d) A scientist interviews every tenth member from the entire sampling frame. Identify the sampling technique used for the study above. i) Census ii) Random Sampling ii) Stratified sampling iv) cluster sampling v)Systematic sampling vi) convenience sampling

Explanation / Answer

3 a) Type of data : continuous since width can't be discrete.

b) observational study since one needs to observe whether customer base is shrinking.

c) meta analysis

since  a meta-analysis uses a statistical approach to combine the results from multiple studies in an effort to increase power (over individual studies), improve estimates of the size of the effect and/or to resolve uncertainty when reports disagree.

d) Systematic sampling since they choose every 10th member from sampling frame.

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