rooms 1 2 3 4 5 6 7 8+ no. of units (in thousands) 47 140 1170 2350 2450 2130 13

Question

rooms 1 2 3 4 5 6 7 8+

no. of units (in thousands) 47 140 1170 2350 2450 2130 1370 1560

The table above provides information on housing units in some part of the U.S. Consider the following five events: A = the unit has at most four rooms B = the unit has at least two rooms C = the unit has between five and seven rooms inclusive D = the unit has more than seven rooms E = the unit has less than three rooms Determine the number of outcomes (in thousands) that comprise each event given below.

B and C

C and D

not E

A or D

A or C

Explanation / Answer

1)number of outcomes in B and C =(2450+2130+1370)=5950

2) C and D =1370

3) not E =(1170+2350+2450+2130+1370+1560)=11030

4)A or D =47+140+1170+2350+1370+1560 =6637

5) A or C =47+140+1170+2350+2450+2130+1370 =9657

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