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Author Question: In a sample of 200 racquetball players, 120 indicated they prefer Penn racquetballs, 75 favored ... (Read 56 times)

natalie2426

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on: Jun 24, 2018
In a sample of 200 racquetball players, 120 indicated they prefer Penn racquetballs, 75 favored Ektelon, and 5 were indifferent. We want to use the sign test to determine if there is evidence of a significant difference in the preferences for the two types of racquetballs. Hint: Use the continuity correction factor.
 a. Provide the hypotheses to be tested.
  b. Compute the mean.
  c. Compute the standard deviation.
  d.. At a 5 level of significance, test to determine if there is evidence of a significant difference in the preferences for the two types of racquetballs.

Question 2

A(n) _____ is an unusually small or unusually large data value.
 a. sample statistic
  b. median
  c. z-score
  d. outlier


TheDev123

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Reply #1 on: Jun 24, 2018
Answer to Question 1

a. H0: p = .5
Ha: p  .5
b. 97.5
c. 6.982
d.. Test Statistic z = 3.15; p-value = .0016 < .05, therefore reject H0 and conclude that there is a significant difference in the preferences for the two types of racquetballs.

Answer to Question 2

d


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