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zns889 zns889
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6 years ago
A random sample of 25 statistics examinations was selected. The average score in the sample was 76 with a variance of 144 . Assuming the scores are normally distributed, the 99 confidence interval for the population average examination score is _____.
 a. 70.02 to 81.98
  b. 69.82 to 82.18
  c. 70.06 to 81.94
  d. 69.29 to 82.71
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FredioFredio
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6 years ago
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zns889 Author
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6 years ago
You make an excellent tutor!
patyfeitosa
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Yesterday
Smart ... Thanks!
Gorgio_De
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2 hours ago
This site is awesome
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