QUESTION 9:
Between July 1, 2008 and June 30, 2009, 498 violations of the University of Arizona Code of
Academic Integrity occurred. 50% of these violations were plagiarism infractions. Of these
plagiarism infractions, 21% were in the Eller college. The other infractions (i.e. not plagiarism)
had 9% come from within Eller. Let P be the event that a violation was a plagiarism infraction,
and let E be the event that the violation was within the Eller college. Find P(E). 0.15 1.00 0.21
0.30 Between July 1, 2008 and June 30, 2009, 498 violations of the University of Arizona Code
of Academic Integrity occurred. 50% of these violations were plagiarism infractions. Of these
plagiarism infractions, 21% were in the Eller college. The other infractions (i.e. not plagiarism)
had 9% come from within Eller. Let P be the event that a violation was a plagiarism infraction,
and let E be the event that the violation was within the Eller college. Find P(P|E). 0.105 0.21
0.70 0.42
Solution
1.0 .21.
Question 9 For questions 9 through 14, you have data from a survey.pdf
1. Question 9
For questions 9 through 14, you have data from a survey of 145 schoolteachers in Ector County.
The mean age of this sample is 38 years, with a standard deviation of 7 years. Assume that this
age data is normally distributed. Round decimals to the nearest hundredth, for example “34.13%
of the teachers would be between 38 and 45 years old.” You will need the Standard Normal
Distribution Table found on pages 493-496 in the book.
What percentage of teachers would have an age between 32 and the mean?
Solution
P(32
