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PrisonKing3749
19.11.2019 •
Mathematics
According to a certain news poll, 71% agreed that it should be the government's responsibility to provide a decent standard of living for the elderly, and 41% agreed that it would be a good idea to invest part of their social security taxes on their own. if agreement with one of these propositions is independent of agreement with the other, what is the probability that a person agreed with both propositions? (round your answer to two decimal places.) hint [see quick examples 4 and 5.]
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Ответ:
0.3157
Step-by-step explanation:
Given that according to a certain news poll, 71% agreed that it should be the government's responsibility to provide a decent standard of living for the elderly,
Let A be the event that it should be the government's responsibility to provide a decent standard of living for the elderly, and B the event that it would be a good idea to invest part of their Social Security taxes on their own
P(B) = 41%=0.41
A and B are independent
Hence P(both)=![0.77(0.41) = 0.3157\\](/tpl/images/0380/8176/20297.png)
the probability that a person agreed with both propositions
= Probability for both A and B
= P(A) P(B) since A and B are independent
= 0.3157
Ответ:
K= 18
Step-by-step explanation:
1 and 8 are exact opposites so they equal eachother
so
3k-7=5k+29
subtract 3k to 5k and add 7 to 29
2k=36
then divide 36 by -2
so K = 18