Question
In: Math
A national television network took an exit poll of 1460 voters after each had cast a...
A national television network took an exit poll of 1460 voters after each had cast a vote in a state gubernatorial election. Of them, 680 said they voted for the RepublicanRepublican candidate and 780 said they voted for the DemocraticDemocratic candidate. Treating the sample as a random sample from the population of all voters, a 95% confidence interval for the proportion of all voters voting for the DemocraticDemocratic candidate was (0.509, 0.560). Suppose the same proportions resulted from n=146146 (instead of 146), with counts of 68 and 78, and that there are only two candidates. Complete parts a and b below.
a. Does a 95% confidence interval using the smaller sample size allow you to predict the winner? Explain.
The 95% confidence interval for the proportion of all voters voting for the DemocraticDemocratic candidate is (____, _____). Now a 95% confidence interval (does, does not) allow you to predict the winner, since this interval (does not include, includes) (0,1, or 0.5).
Solutions
milcah answered 5 months agoRelated Solutions
In one exit poll of n = 140 voters, 66 said they voted for the Democratic...
In one exit poll of n = 140 voters, 66 said they voted for the
Democratic candidate and 74 said they voted for the Republican
candidate.
(a) Does a 95% confidence interval for the proportion voting for
the Democratic candidate allow you to predict the winner? Why or
why not?
No, because some of the values in the interval are negative
(less than 0) or greater than 1, depending on whether we define
the proportion to be voting for the...
A magazine reported the results of a random telephone poll commissioned by a television network. Of...
A magazine reported the results of a random telephone poll
commissioned by a television network. Of the 1144 men who
responded, only 32 said that their most important measure of
success was their work. Complete parts a through c. a right
parenthesis Estimate the percentage of all males who measure
success primarily from their work. Use a 95% confidence interval.
Don't forget to check the conditions first.
A Poll of 958 of all national registered voters found that, in the first week of...
A Poll of 958 of all national registered voters found that, in
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confidence do you have in police officers in your community to
treat black people and white people equally: a great deal of
confidence, a fair amount, just some, or very little confidence?”.
Some results of the poll are as follows:
• There were 604 white respondents, and 70% of the white
respondents responded that they had “a...
In a poll to estimate presidential popularity, each person in a random sample of 1,190 voters...
In a poll to estimate presidential popularity, each person in a
random sample of 1,190 voters was asked to agree with one of the
following statements: 1. The president is doing a good job. 2. The
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In a poll to estimate presidential popularity, each person in a random sample of 1,230 voters...
In a poll to estimate presidential popularity, each person in a
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following statements:
The president is doing a good job.
The president is doing a poor job.
I have no opinion.
A total of 675 respondents selected the first statement, indicating
they thought the president was doing a good job.
Construct a 99% confidence interval for the proportion of
respondents who feel the president is doing a...
Eight students were given a quiz before & after they took review classes had the following...
Eight students were given a quiz before & after they took
review classes had the following ratings:
Before
After
5
6
6
6
4
9
4
6
4
5
5
6
8
9
7
10
What is the critical value at the .05 level of
significance?
What is the test statistic?
At an .05 level of significance, can we conclude that the
review classes were helpful?
Using the data above, assume that these were scores of two
groups of 8...
Subjective assessment A 64-year-old lady who has just had the cast removed after 6/52 of immobilization...
Subjective assessment
A 64-year-old lady who has just had the cast removed after 6/52
of immobilization for a Colles’ fracture of her right wrist. She
has been referred to physiotherapy for exercises.
The patient tripped and fell on an uneven section of the
pavement while hurrying to the bus stop on her way to work.
After the application of the cast on the day of injury, the
patient did not receive any instruction regarding the prevention of
joint stiffness or...
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