Question
In: Statistics and Probability
In a survey of 1407 people, 1077 people said they voted in a recent presidential election....
In a survey of 1407 people, 1077 people said they voted in a recent presidential election. Voting records show that 74% of eligible voters actually did vote. Given that 74% of eligible voters actually did vote, (a) find the probability that among 1407 randomly selected voters, at least 1077 actually did vote. (b) What do the results from part (a) suggest?
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Answer:
Given that:
In a survey of 1407 people, 1077 people said they voted in a recent presidential election. Voting records show that 74% of eligible voters actually did vote. Given that 74% of eligible voters actually did vote
a) find the probability that among 1407 randomly selected voters, at least 1077 actually did vote.
Binomial can be approximated to normal with
Normal distribution 
b) What do the results from part (a) suggest?
Since this probability is so small,it suggest that this sample might be biased or survey suffered with self assesment bias
orchestra answered 1 year agoRelated Solutions
In a survey of 1000 people, 700 said that they voted in a recent presidential election....
In a survey of 1000 people, 700 said that they voted in a recent
presidential election. Voting records show that 61% of eligible
voters actually did vote. Construct a 96% confidence interval
estimate of the proportion of people who say that voted.
In a survey of 1002 people, 701 said that they voted in a recent presidential election...
In a survey of 1002 people, 701 said that they voted in a recent
presidential election (based on data from ICR Research Group).
Voting records show that 61% of eligible voters actually did vote.
Given that 61% of eligible voters actually did vote, find the
probability that among 1002 randomly selected eligible voters, at
least 701 actually did vote. What does the result suggest?
[Write your answer as a complete sentence]
In a survey of 1359 people, 954 people said they voted in a recent presidential election....
In a survey of 1359 people, 954 people said they voted in a
recent presidential election. Voting records show that 68% of
eligible voters actually did vote. Given that 68% of eligible
voters actually did vote, (a) find the probability that among 1359
randomly selectedvoters, at least 954 actually did vote. (b) What
do the results from part (a) suggest?
(a) P(X ≥ 954) = ? (Round to four decimal places as
needed.)
(b) What does the result from part...
In a survey of 1168 people, 741 people said they voted in a recent presidential election....
In a survey of 1168 people, 741 people said they voted in a
recent presidential election. Voting records show that 61% of
eligible voters actually did vote. Given that 61% of eligible
voters actually did vote, (a) find the probability that among 1168
randomly selected voters, at least 741 actually did vote. (b)
What do the results from part (a) suggest?
In a survey of 1453 people, 1033 people said they voted in a recent presidential election....
In a survey of 1453 people, 1033 people said they voted in a
recent presidential election. Voting records show that 69 % of
eligible voters actually did vote. Given that 69 % of eligible
voters actually did vote, (a) find the probability that among 1453
randomly selected voters, at least 1033 actually did vote. (b) What
do the results from part (a) suggest?
(a) P(x ?1033 )= _______ (Round to four decimal places as
needed)
In a survey of 1073 people, 743 people said they voted in a recent presidential election....
In a survey of 1073 people, 743 people said they voted in a
recent presidential election. Voting records show that 66% of
eligible voters actually did vote. Given that 66% of eligible
voters actually did vote, (a) find the probability that among 1073
randomly selected voters, at least 743 actually did vote. (b)
What do the results from part (a) suggest? (a) P(Xgreater than
or equals743)equals nothing (Round to four decimal places as
needed.)
In a survey of 1016 people, 778 people said they voted in a recent presidential election....
In a survey of 1016 people, 778 people said they voted in a
recent presidential election. Voting records show that 74% of
eligible voters actually did vote. Given that 74% of eligible
voters actually did vote, (a) find the probability that among 1016
randomly selected voters, at least 778 actually did vote. (b)
What do the results from part (a) suggest?
(a) P(Xgreater than or equals778)equals nothing (Round to
four decimal places as needed.)
(b) What does the result...
In a survey of 1301 people, 842 people said they voted in a recent presidential election....
In a survey of
1301
people,
842
people said they voted in a recent presidential election. Voting
records show that
62%
of eligible voters actually did vote. Given that
62%
of eligible voters actually did vote, (a) find the probability
that among
1301
randomly selected voters, at least
842
actually did vote. (b) What do the results from part (a)
suggest?
(a)
P(Xgreater than or equals≥842)equals=nothing
(Round to four decimal places as needed.)
(b) What does the result from part...
In a survey of 1373 people, 930 people said they voted in a recent presidential election....
In a survey of 1373 people, 930 people said they voted in a
recent presidential election. Voting records show that 65% of
eligible voters actually did vote. Given that 65% of eligible
voters actually did vote, (a) find the probability that among 1373
randomly selected voters, at least 930 actually did vote. (b)
What do the results from part (a) suggest? (a) P(Xgreater than
or equals930)equals nothing (Round to four decimal places as
needed.) (b) What does the result from...
1. In a presidential election, 308 out of 611 voters surveyed said that they voted for...
1. In a presidential election, 308 out of 611 voters surveyed
said that they voted for the candidate who won. Use a 0.01
significance level to test that among all voters, the percentage
who believe they voted for the winning candidate is different from
43%, which is the actual percentage of votes for the winning
candidate. What does the result suggest about voter perceptions?
Must show all work.
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