What is the null hypothesis equation for this experiment?

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To determine the effectiveness of a new anti-hypothyroid drug, circulating thyroid stimulating hormone (TSH) levels were measured in 20 men (with hypothyroid levels) and compared to 20 men (with hypothyroid levels) that received current standard therapy as control. The data are summarized in the table below.

  1. What is the null hypothesis equation for this experiment? Answer: ___________
  2. Based on the statistical test that you chose, do you accept or reject the null hypothesis at P=0.05?

Answer: ___________

  1. What is the 95% confidence intervals for this 2 sample t-test?

Answer: ___________

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  1. What is the difference of Means?

Answer: ___________

  1. What is the expected standard deviation (s) within groups?
    s = Round to the thousandths place.

Answer: ___________

  1. What is the Power of this test? Please paste your data output file in the area below.
    Answer: ___________
  1. Assuming that the difference of means and expected standard deviation within groups remain the same, how many samples are needed to achieve a power of 0.80? Alpha=0.05.

Answer: ___________