# Week 2 Assignment

Assignment 2 Instructor Comments:

1. Just multiply each value by its weight; add them together; then divide by the sum of all the weights.

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2. Most everybody gets these rightâ€”just use the formulas in the book as a guide. Give the answers in 2 place decimalsâ€”not as a fraction.

3. As with item 2, most students get the first 5 correct and the last 2 wrong. Hintâ€”the last two problems are mathematically the same as the 5th one. Why? Give the answers in 3 place decimals.

Question 1

1. Compute the weighted mean for the following data. Question 2

1. If P(A) = 0.50, P(B) = 0.40, and P(A âˆª B) = 0.88, then P(B | A) =

Question 3

Six vitamin and three sugar tablets identical in appearance are in a 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 B was given a sugar tablet given that Person A was given a vitamin tablet?
3. neither was given vitamin tablets?
4. both were given vitamin tablets?
5. exactly one person was given a vitamin tablet?
6. Person A was given a sugar tablet and Person B was given a vitamin tablet?
7. Person A was given a vitamin tablet and Person B was given a sugar tablet?

 Grading Criteria Assignments Maximum Points Meets or exceeds established assignment criteria 40 Demonstrates an understanding of lesson concepts 20 Clearly presents well-reasoned ideas and concepts 30 Uses proper mechanics, punctuation, sentence structure, and spelling 10 Total 100