A researcher is studying a rare blood disease disease. The researcher sends a pa

Question

A researcher is studying a rare blood disease disease. The researcher sends a participation request to al 2000 families, and the first 500 to respond are used in the study Part A: Which sampling method did the researcher use to obtain his sample? Part B: will this sampling method bias the study? Why or why not? Select one option for Part A, and select one o is studying a rare blood disease developed among 2000 infants born this year in the U.S. He wants to physically assess 500 of these infants to collect further data on the that correctly answers both questions for Part B. O A: systematic random sampling o B: This method may yield biased results because it is based on proportionality of participants rather than randomness O A: cluster random sampling A: convenience sampling o B: This method will not yield biased results because the sample population is obtained in a fair and random way o B: This method may yield biased results because it is based on accessibility of participants rather than randomness. because the researcher has no control over the selection of the sample population. oB: This method will not yieid blased results

Explanation / Answer

For A. Convenience sampling, because in this type of sampling the first primary data source available are used for the research study while all data sources are invited to participate.

For B. This method may yield biased result because it based on proportionality of participants rather than randomness, which follows from the explanation given in A.

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