Ages of the First 21 Shoppers to Walk into a Department Store

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0

10

20

30

40

50

60

What is the median age shown on the box-and-whisker plot?

A. 1

B. 11.5

C. 19

O D. 38.5

E. 53

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?