Inferential Statistics


Write: In your initial post of at least 550 words, using Exercises 2, 4, and 5 on pages 154-155, complete the following:

  • Exercise 2(A): Obtain Z scores for each of the following raw egalitarianism scores: 5, 9, 14, 16, and 19.
  • Exercise 2(B): What are the raw-score ranges for each of the four ordinal categories?
  • Exercise 4(A): (i) Using the sample standard deviation as a substitute for the population standard deviation, what is the standard error of the sample mean? (ii) Using the +- 2 shortcut, what is the 95% confidence interval of the sample mean?
  • Exercise 4(B): Is the skeptic on solid statistical ground? Explain your response.
  • Exercise 5(A): Calculate the standard error of the sample mean.
  • Exercise 5(B): Using the +- 2 shortcut, calculate the 95% confidence interval.
  • Exercise 5(C): If the true gender difference is 5 inches, can you infer from your sample that individuals perceive a greater difference than actually exists? Explain your response.