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(See Steps) Study of mutual fund performance. Refer to the American Business Rct'iett' (Jan. 2002) comparison of large-cap, medium-cap and small-cap mutual

Question: Study of mutual fund performance. Refer to the American Business Rct'iett' (Jan. 2002) comparison of large-cap, medium-cap and small-cap mutual funds. Exercise 8.26

(p. 499). Using an experimentwise error rate of .05. Tukey confidence intervals for the difference between mean rates of return for all possible pairs of fund types are given below.

  1. Why is the Tukey multiple comparisons method preferred over another method?
  2. Is there a significant difference between the treatment means for large-cap and medium-cap mutual funds? Explain.
  3. Is there a significant difference between the treatment means for large-cap and small-cap mutual funds? Explain.
  4. Is there a significant difference between the treatment means for medium-cap and small cap mutual funds? Explain.
  5. Use your answers to parts b—d to rank the treatment means.
  6. Give a measure of reliability for the inference in part e.

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