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Answer:

Data in each group must be obtained via a random sample from the population.

A two-sample t-test is used when you want to compare two independent groups to see if their means are different.

Answer:

See below

Step-by-step explanation:

A two-sample t test must meet the following conditions:

  • Both samples are random samples taken from their respective populations and are independent of each other
  • Population variances are equal and unknown
  • Parent populations from which samples are drawn must be normally distributed

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