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Find the width of the 95 percent confidence interval for mean.

For a sample of 138 independent observations from a normal distribution of unknown μ and variance σ2 = 2.6, the sample mean is 52.3. What is the width of the 95 percent confidence interval for μ?

(i) 0.269

(ii) 0.538

(iii) 6.3208

(iv) 0.0116

(v) 0.0233

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921802

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