Part 1
Frankfort-Nachmias and Leon-Guerrero (2018) noted that the precision of a confidence interval can be enhanced by increasing the sample size.
Write a 250- to 300-word response to the following:
· How does sample size affect the validity of a study?
· What factors determine the size of an ideal sample?
· How is the sample size calculated?
Reference: Frankfort-Nachmias, C., & Leon-Guerrero, A. (2018). Social statistics for a diverse society (8th ed.). Thousand Oaks, CA: SAGE Publications, Inc.
Part 2
Write a 250- to 300-word response to the following:
· Select one of the sampling designs introduced in this weekâ€s readings. Probability sampling
· Give a brief introduction of the sampling design, and explain where you might apply it most successfully.
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Sampling new
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