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Author Question: At one college, GPA's have a bell-shaped distribution with a mean of 2.9 and a standard deviation of ... (Read 82 times)

joesmith1212

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on: Aug 1, 2018
At one college, GPA's have a bell-shaped distribution with a mean of 2.9 and a standard deviation of 0.4. What percentage of students at the college have a GPA between 2.5 and 3.3?
 
  A) 99.7 B) 95 C) 68

Question 2

If H0 is true in a chi-square test of independence, then the expected and observed .
 
  a. means in a cell of a contingency table should be about equal
  b. standard deviations in a cell of a contingency table should be about equal
  c. frequencies in a cell of a contingency table should be unequal
  d. frequencies in a cell of a contingency table should be about equal


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Ahnyah

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Reply #1 on: Aug 1, 2018
Answer to Question 1

C

Answer to Question 2

D


joesmith1212

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Reply 2 on: Aug 1, 2018
Excellent

bbburns21

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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