Week 2 Computing Weights and Probability Paper

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Week 2 Computing Weights and Probability Paper

Week 2 Assignment

Question 1

  1. Compute the weighted mean for the following data.

Weight

Grade Earned

Midterm

10%

90

Discussion

30%

35

Assignment

20%

85

Project

20%

80

Quizzes

20%

100

If the professor asked you if you would like the mean grade or the weighted mean grade for your final grade, which would you choose? Why? What weighted category made the greatest impact?

Question 2

  1. If P(A) = 0.70, P(B) = 0.20, and P(A ∩ B) = 0.15, then P(B | A) =

Question 3

Ten vitamin and five sugar tablets identical in appearance are in a box. These are the only things in the box. One tablet is taken at random and given to Person A. A tablet is then selected and given to Person B. What is the probability that

  1. Person A was given a vitamin tablet?
  2. Person A was given a piece of candy.
  3. Person A was given a tablet of some kind.
  4. Person B was given a sugar tablet given that Person A was given a vitamin tablet?
  5. neither was given vitamin tablets?
  6. both were given vitamin tablets?
  7. Person A was given a sugar tablet and Person B was given a vitamin tablet?
  8. Person A was given a vitamin tablet and Person B was given a sugar tablet?
  9. exactly one person was given a vitamin tablet?
Grading Criteria AssignmentsMaximum Points
Meets or exceeds established assignment criteria40
Demonstrates an understanding of lesson concepts20
Clearly presents well-reasoned ideas and concepts30
Uses proper mechanics, punctuation, sentence structure, and spelling10
Total100

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