What is the test statistic

Reference no: EM132182413

Question - The University is considering changing the email system that they currently use. Since there are substantial learning costs associated with any new software, the University only wants to change to the new system if it is very confident that there is at least a 20% difference in the proportion of faculty and staff who say they like the new system. In a sample of 131 users of the current system, the University finds that 67 say they like the current system. In another sample of 91 experimental users of the new system, the University finds that 75 of them like the new system. When testing the hypothesis (using a 5% level of significance) that there is at least a 20% difference in the proportion of users who like the two systems, what is the test statistic? (Please round your answer to 2 decimal places).

Reference no: EM132182413

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