Please indicate which type of sampling design is most appropriate for each of the following studies....

Please indicate which type of sampling design is most appropriate for each of the following studies. The choices are SRS, stratified random sampling, and matched pair design.

(1). A researcher wants to know the effect of climate change on the percent yield of the corn harvest. They collected the data for the same 50 plots in both 2016 and 2017 for their study.

(2).A developer in West Lafayette wants to know if students who are renting off-campus like their apartment complex. They chose 10 students who lived in 5 different complexes.

(3).A pharmaceutical company wants to determine if the size of a new pill is too large to take. They randomly select 200 people and asked if they could swallow the pill or not.

(4).A rice manufacturer chose 100 single servings to test to be sure that there is no more 10 ppb of arsenic in them to assure to their customers that the product is safe to eat.

Solutions

Expert Solution

(1). A researcher wants to know the effect of climate change on the percent yield of the corn harvest. They collected the data for the same 50 plots in both 2016 and 2017 for their study.

- matched pair design

As two years can have different climate and the crop yield can be compared for both the years

(2).A developer in West Lafayette wants to know if students who are renting off-campus like their apartment complex. They chose 10 students who lived in 5 different complexes.

- stratified random sampling

As from each society a certain number of number of samples are to be chosen

(3).A pharmaceutical company wants to determine if the size of a new pill is too large to take. They randomly select 200 people and asked if they could swallow the pill or not.

- Simple random sampling

As each person is randomly picked

(4).A rice manufacturer chose 100 single servings to test to be sure that there is no more 10 ppb of arsenic in them to assure to their customers that the product is safe to eat.

- Simple random sampling

As each serving is randomly picked

orchestra answered 1 year ago

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