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[Step-by-Step] Please answer the following. Explain the difference between testing a single mean and testing the difference between two means. What two assumptions

Question: Please answer the following.

  1. Explain the difference between testing a single mean and testing the difference between two means.
  2. What two assumptions must be met when one is using z test to test differences between two means?
  3. When can the sample standard deviations s 1 and s 2 be used in place of the population standard deviations 1 and 2 ?

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Deliverable: Word Document


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