d Use the above data to construct a 95 confidence interval for p 1 p 2 075 071

D use the above data to construct a 95 confidence

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d.Use the above data to construct a 95% confidence interval for p1- p2 2.Use the data in BUSI1013 Bank Dataset.xlsx(from Unit 1 Exercise Question 2) to answer this question. (4 points each; 8 Points in total)a.Perform a statistical test to see whether the proportion of members who would recommend the Bank to their family and friends have increased because of the change.
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BUSI 1013 Statistics for Business – Exercise 9 3 b.Construct a 99% confidence interval for the difference of the proportions, before and after the change, of members who would recommend the Bank to their family and friends. 3. A national retailer has completed an internal survey on its social media strategy. The key question in the survey is whether the stores managers think that the recently-launched social media strategy is effective. The following is the output of a statistical analysis of the data:Social Media Strategy is effectiveStore ManagersNoYesTotalWest Region153550Central Region102838
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  • Winter '15
  • Statistics, Statistical hypothesis testing, West region

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