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Author Question: The dean of admissions in a large university has determined that the scores of the freshman class in ... (Read 183 times)

sam.t96

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on: Jul 24, 2018
The dean of admissions in a large university has determined that the scores of the freshman class in a mathematics test are normally distributed with a mean of 82 and a standard deviation of 8 . Based on this information, what is the probability that the mean score of a sample of 64 students is at least 80?
 a. .0987
  b. .4772
  c. .5987
  d. .7885
  e. .9772

Question 2

The number of degrees of freedom associated with the t-test, when the data are gathered from a matched pairs experiment with 10 pairs, is:
 a. 10
  b. 20
  c. 9
  d. 18
  e. 11


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jessofishing

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Reply #1 on: Jul 24, 2018
Answer to Question 1

E

Answer to Question 2

C


sam.t96

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Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

bitingbit

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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