SOLUTION: in a poll conducted in 2007, 2000 adults ages 18 yr and older were asked how frequently they are in touch with their parents by phone the results of the poll are as follows answ

Algebra ->  Probability-and-statistics -> SOLUTION: in a poll conducted in 2007, 2000 adults ages 18 yr and older were asked how frequently they are in touch with their parents by phone the results of the poll are as follows answ      Log On


   

Question 375951: in a poll conducted in 2007, 2000 adults ages 18 yr and older were asked how frequently they are in touch with their parents by phone the results of the poll are as follows
answer monthly weekly daily dont know less
respondents % 11 47 32 2 8
if a person who participated in the poll is selected at random what is the probability that the person said he or she kept in touch with his or her parents
A) once a week
B) at least once a week
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
in a poll conducted in 2007, 2000 adults ages 18 yr and older were asked how frequently they are in touch with their parents by phone the results of the poll are as follows
answer monthly weekly daily dont know less
respondents % 11 47 32 2 8
if a person who participated in the poll is selected at random what is the probability that the person said he or she kept in touch with his or her parents
A) once a week:::::0.47
--------------------------------
B) at least once a week::::: 0.47+0.32 = 0.79
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Cheers,
Stan H.