1. Compute the sample size with the standard deviation and its margin of error then apply the stratified sampling of a given scenario. There was about 1800 total population given a sample size of 89. There are about 150 Engineers, 120 Information Technology Professionals, 180 Professional Teachers and 80 Business professionals. Provide the procedure and the screenshot of the computation

2. Describe the proposed study and articulate the reason for the chosen sampling method?

3. Compute the sample size of the proposed study and explain the reason for applying the z-value level of confidence.

Follow up questions:

1. What is sample and why it is important?

2. When do you apply the sampling method?