A fair die is rolled 4 times. What is the probability of having no 2 and no 3 am
ID: 3203855 • Letter: A
Question
A fair die is rolled 4 times. What is the probability of having no 2 and no 3 among the rolls? Round your answer to three decimal places.
A sample of 269 adults is selected. The adults are classified according to their voter registration status and their preferred source of current events information. The results are given in the contingency tablebelow.
Preferred source of information
Television
Newspapers
Radio
Internet sites
Voting registration status
Registered
25
44
23
47
Not registered
45
30
21
34
Among the adults in the sample who prefer to obtain their information through internet sites, what is therelative frequency of those who are not registered to vote?
A sample of 269 adults is selected. The adults are classified according to their voter registration status and their preferred source of current events information. The results are given in the contingency tablebelow.
Preferred source of information
Television
Newspapers
Radio
Internet sites
Voting registration status
Registered
25
44
23
47
Not registered
45
30
21
34
Among the adults in the sample who prefer to obtain their information through internet sites, what is therelative frequency of those who are not registered to vote?
Explanation / Answer
1) in the event of die probabilty that no 2 and 3 comes in one roll =4/6 ; as then there are 4 outcomes out of 6
as one roll is independent of other therefore
probability of having no 2 and no 3 among 4 rolls =(4/6)4 =0.198
2)relative frequency =(frequency of those who are not registered to vote & information through sites)/total people
=34/269 =0.126
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