Reference no: EM131695957

Question: For problem, construct a 95% confidence interval for the difference in stock performance.

Problem: "Strategizing for the future" is management lingo for sessions that help managers make better decisions. Managers who deliver the best stock performance get results by bold, rule-breaking strategies. To test the effectiveness of "strategizing for the future," companies' 5-year average stock performance was considered before, and after, consultant-led "strategizing for the future" sessions were held.

Before (%)                After (%)

10                             12

12                             16

8                               -2

-5                             10

-1                             11

5                              18

-3                             -8

16                             20

-2                             -1

13                             21

17                             24

Test the effectiveness of the program, using α = 0.05.