Question: Create a 95% confidence interval estimate for the average difference between monthly new business before training and after training. Based on your answer to Exercise

Create a 95% confidence interval estimate for the average difference between monthly new business before training and after training. Based on your answer to Exercise 15, would you expect this interval to contain zero?
In exercise

Staff Member Shirley Tom Janice Brian Ed Kim Monthly New Business Before Training ($000s) 230 150 100 75 340 500 Monthly New Business After Training ($000s) 240 165 90 100 330 525

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