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There is an intelligence test with a known mean () of 200 and standard deviation ()...

There is an intelligence test with a known mean () of 200 and standard deviation () of 20. Calculate and interpret the 95% confidence interval for the mean of all WVSU students based for each problem.

  

  1. Sample of 75 students,  = 198
  1. Sample of 110 students,  = 210
  1. Sample of 500 students, = 211

4. Sample of 25 students, = 189

  1. Sample of 1000 students, = 202
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