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A placement exam is given to 36 randomly chosen college students. Their mean score is 63.6 with the standard deviation of 15.1 points. Develop a 90% confidence interval for mean score on this placement exam for all students.

a. 23.48 < = mean <= 27.32

b. 2.42 <= mean <=3.98

c. 59.46 < = mean < = 67.74

d. 17.70 < = mean < = 18.90

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920701

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