Question: Carefully define the following terms: Null hypothesis, alternative hypothesis, Type I error, Type II error, one-tailed test, two-tailed test consider this question, when we say

  1. Carefully define the following terms: Null hypothesis, alternative hypothesis, Type I error, Type II error, one-tailed test, two-tailed test
  2. consider this question, when we say that the standard deviation is known--does this mean we know the type of the distribution as well?
  3. how do you state the null and the alternate hypothesis? Please provide an example.
  4. How do you interpret a confidence interval?

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