A survey of 250 people showed that 150 own a house, 180 own a car and 230 own at least of of these ( a house or a car )
1. Draw a venn diagram that depic the information above ?
Does the 230 are in the middle section where both a and c are ?
b . What is the probabilty that a randomly selected person from the survey owns a care but not a house ?
c. What is the probabilty that a randomlly selected person from the survey own a house and a car ?
d. what is the probabilty that a randomly selected person from the survey does not own a house nor a car ?
e; What is he probabilty that a randomly selected person from the survey owns only a house ( but not a car ) or only a car ( but not a house ) ?
IM SORRY i know its a lot of question, but I just need help and example or formula to understand how to do my others question, and Its the first time I M DOING THIS
VENN DIAGRAM its so CONFUSING ! :(
Thank yous o much for the one who has the patience to at least read everything
We first need to find the number in the intersection of the Venn Diagram [ the number owning both].....this is given by
(Number owning H and C) = (Number owning H) + (Number owning C) - (Number owning H or C)
(Number owning H and C) = 150 + 180 - 230
= 100
Here's the Diagram.......
b. P(H but not C) = 50 / 250 = 1/5 = 20% [ remember that 20 people fall "outside" the circles ]
c. P( H and C) = 100 / 250 = 2/5 = 40%
d. P (Neither) = 20 / 250 = 2/25 = 8%
e. P(H but not C) = same as b ....... P(C but not H) = 80 / 250 = 8/25 = 32%
Hang in there.....this is a little difficult to grasp.....!!!!!