Capella University Statistics Sample Size in Research Discussion

Can you help me understand this Writing question?

Frankfort-Nachmias and Leon-Guerrero (2018) noted that the precision of a confidence interval can be enhanced by increasing the sample size.

Write a 350-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.