. A survey of the number of calls received by a sample of Southern Phone Company subscribers last week revealed the following information.

52 43 30 38 30 42 12 46 39 37 34 46 32 18 41 5

a) Develop a stem-and-leaf chart. Above for tips on presenting Stem-Leaf plot.

b) What basic conclusions can be drawn from this chart?

c) Compute the 5 number System for this data set and list Xmin,Q1,Q2,Q3 & Xmax. See Videos and show how the pointer was computed for each quartile.

(15%)

2. For the following table, what is the value of :

a) P(A1)

b) P(B1A2)

c) P(B2 and A3). Compute this as P(B2)*P(A3 B2) . Rows are B1 & B2: columns are A1, A2 & A3.

What are the values of P(B2) , P(A3|B2) and P(B2&A3)?

In what row and column will you find this answer?