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Author Question: A random sample of 25 statistics examinations was selected. The average score in the sample was 76 ... (Read 129 times)

Metfan725

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  • Posts: 552
on: Jun 24, 2018
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

Question 2

Excel's EXPON.DIST function has how many inputs?
 a. 2
  b. 3
  c. 4
  d. 5


Beatricemm

  • Sr. Member
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  • Posts: 323
Reply #1 on: Jun 24, 2018
Answer to Question 1

d

Answer to Question 2

b


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