Determine when to use t and when to use z


Problem: Locate a flowchart online which helps you determine when to use t and when to use z in your calculations. The flow chart should include knowledge of population standard deviation and sample size. Embed it in this assignment. Cite your source. Explain how to use the flowchart given this scenario: You have a sample size of 197 and you know the population standard deviation. Will you be using z or t?

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