1252a

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?