When using Cochran's formula for sample size calculation, which factor does it take into account?*1 pointA. Confidence level.B. Margin of error.C. Population proportion.D. Population size.
Question
When using Cochran's formula for sample size calculation, which factor does it take into account?*1 pointA. Confidence level.B. Margin of error.C. Population proportion.D. Population size.
Solution
Cochran's formula for sample size calculation takes into account all of the following factors:
A. Confidence level: This is the probability that the confidence interval produced will contain the true population parameter. Common choices are 90%, 95%, or 99%.
B. Margin of error: This is the range in which the true population parameter is estimated to be. The smaller the margin of error, the closer the sample estimate is to the true population parameter.
C. Population proportion: This is an estimate of the proportion of the population that has the characteristic of interest. If this is unknown, a proportion of 0.5 is often used, which gives the maximum sample size.
D. Population size: This is the total number of individuals in the population. If the population size is large, the sample size does not need to be a significant proportion of the population.
Similar Questions
When using Cochran's formula for sample size calculation, which factor does it take into account?
What is the primary purpose of Cochran's formula for sample size calculation?*1 pointA. To calculate the sample size needed for a simple random sample.B. To adjust the sample size based on the confidence level.C. To determine the sample size for a stratified random sample.D. To estimate the population size with limited resources.
Which of the following statements is true regarding sample size calculations?*1 pointA. Slovin's formula is used for determining the sample size for stratified sampling.B. Cochran's formula accounts for the margin of error and confidence level.C. Population size is not a consideration when calculating sample size.D. Slovin's formula is suitable for use in all types of sampling methods.
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A research team at the Boston City Campus is planning a survey to assess third-year student satisfaction with their HRMM330-1 module. They want to ensure that the sample size they select will provide statistically meaningful results. They are considering various factors such as the level of confidence, the standard deviation of the population, and the tolerable error. What formula should the research team use to determine the appropriate sample size for their survey? Group of answer choices𝐴=𝜋𝑟2𝑛=(𝜎𝑍𝐸)2𝑆=4𝜋𝑟2
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