Week 3 - Assignment: Evaluate Sampling Method and Sample Size Instructions This assignment consists of three parts: (1)
Posted: Wed May 11, 2022 9:12 am
Week 3 - Assignment: Evaluate Sampling Method and Sample Size
Instructions This assignment consists of three parts: (1) Sample
Selection Recommend the steps that should be taken to draw the
particular sample described below. Format your response as a
procedure. A stratified sample of 75 doctors, 75 lawyers and 75
engineers who belong to a professional organization in that you
belong to. A simple random sample of 150 subscribers to your local
newspaper. A systematic sample of 250 subscribers from a subscriber
list of a trade publication. (2) A Priori Power Analysis Download
the G*Power software provided, and then use the software to submit
the following: a. Calculate the estimated sample size needed when
given these factors: one-tailed t-test with two independent groups
of equal size small effect size (see Piasta, S.B., & Justice,
L.M., 2010) alpha =.05 beta = .2 (Reminder: Power = 1 - beta)
Assume that the result is a sample size beyond what you can obtain.
Use the compromise function to compute alpha and beta for a sample
half the size. Indicate the resulting alpha and beta. Analyze the
result and decide if the study should be conducted with a smaller
sample size. Explain your rationale. In the context of Type I and
Type II error. Include a visual of the G* Power output matrix. b.
Calculate the estimated sample size needed to perform an ANOVA
(fixed effects, omnibus, one-way) when given these factors: ANOVA
(fixed effects, omnibus, one-way) small effect size alpha =.05 beta
= .2 3 groups Include a visual of the G* Power output matrix. (3)
Intended Research Sampling Method Describe the sampling method that
would be appropriate for your intended research. Outline the
problem statement, purpose statement, and research questions.
Describe the population of interest (also referred to as the
theoretical population). Identify the sampling frame to be used to
recruit participants. List criteria to be met for an interested
person to participate in the research study. Compute an estimated
sample size. Describe the recruitment procedure that might be used
to draw the actual sample.
Instructions This assignment consists of three parts: (1) Sample
Selection Recommend the steps that should be taken to draw the
particular sample described below. Format your response as a
procedure. A stratified sample of 75 doctors, 75 lawyers and 75
engineers who belong to a professional organization in that you
belong to. A simple random sample of 150 subscribers to your local
newspaper. A systematic sample of 250 subscribers from a subscriber
list of a trade publication. (2) A Priori Power Analysis Download
the G*Power software provided, and then use the software to submit
the following: a. Calculate the estimated sample size needed when
given these factors: one-tailed t-test with two independent groups
of equal size small effect size (see Piasta, S.B., & Justice,
L.M., 2010) alpha =.05 beta = .2 (Reminder: Power = 1 - beta)
Assume that the result is a sample size beyond what you can obtain.
Use the compromise function to compute alpha and beta for a sample
half the size. Indicate the resulting alpha and beta. Analyze the
result and decide if the study should be conducted with a smaller
sample size. Explain your rationale. In the context of Type I and
Type II error. Include a visual of the G* Power output matrix. b.
Calculate the estimated sample size needed to perform an ANOVA
(fixed effects, omnibus, one-way) when given these factors: ANOVA
(fixed effects, omnibus, one-way) small effect size alpha =.05 beta
= .2 3 groups Include a visual of the G* Power output matrix. (3)
Intended Research Sampling Method Describe the sampling method that
would be appropriate for your intended research. Outline the
problem statement, purpose statement, and research questions.
Describe the population of interest (also referred to as the
theoretical population). Identify the sampling frame to be used to
recruit participants. List criteria to be met for an interested
person to participate in the research study. Compute an estimated
sample size. Describe the recruitment procedure that might be used
to draw the actual sample.