a. The probability of randomly selecting a person who will vote for candidate 1 or 2 is (250 + 1250) / 2500 = 1500 / 2500 = 0.6 or 60%.
b. If 1,000 more voters are surveyed, we can estimate that the number of voters who will likely prefer candidate 3 or 4 will be (450 + 550) / 2500 * 1000 = 400. This estimate is based on the proportion of supporters for candidates 3 and 4 in the original survey.
There are four presidential candidates in a country. A street survey was
conducted asking 2,500 registered voters which candidate they will vote for in
the coming election. The table summarizes the results of the survey.
candidates supporters
Candidate 1 250
Candidate 2 1,250
Candidate 3 450
Candidate 4 550
a. What is the probability of randomly selecting a person who will vote for candidate 1 or 2?
b. If 1,000 more voters are surveyed, how many of them will likely prefer candidate 3 or 4? Explain the answer.
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