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 ∪ 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?