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Step 1. In RStudio, import the dataset from the CSV source file into a data frame called ch5Exercise.

  1. Next, using the appropriate R commands for each step
  2. :Step 2. Create a new data frame called ProductCategories that excludes the ReceiptID.
  3. Step 3. Replace all values of zero (0) in the ProductCategories data frame with missing values.
  4. Step 4. Load the 'arules' library and create an association rules data model in an R object called ProductRules. Require at least one premise and one conclusion. Set a strict support percent cutoff of 15%. Set a strict confidence percent cutoff of 50%.
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The Wall Street Journal Corporate Perceptions Study 2011 surveyed readers and asked how each rated the quality of management and the reputation of the company for over 250 worldwide corporations. Both the quality of management and the reputation of the company were rated on an excellent, good, and fair categorical scale. Assume the sample data for 200 respondents below applies to this study. Reputation of Company Quality of Management Excellent Good Fair Excellent 40 25 8 Good 35 35 10 Fair 25 10 12 (a) Use a 0.05 level of significance and test for independence of the quality of management and the reputation of the company. State the null and alternative hypotheses. H0: Quality of management is independent of the reputation of the company. H1: Quality of management is not independent of the reputation of the company. Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. Do not reject H0. We cannot conclude that the rating for the quality of management is independent of the rating of the reputation of the company. (b) If there is a dependence or association between the two ratings, discuss and use probabilities to justify your answer. For companies with an excellent reputation, the largest column probability corresponds to excellent management quality. For companies with a good reputation, the largest column probability corresponds to good management quality. For companies with a fair reputation, the largest column probability corresponds to fair management quality.
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Question Text
Step 1. In RStudio, import the dataset from the CSV source file into a data frame called ch5Exercise.
TopicAll Topics
SubjectStatistics
ClassClass 11