A political candidate has asked you to conduct a poll to determine what percentage of people support her. From a random sample of 490, 353 said they would support the candidate. A 95% confidence interval is constructed. a) In words, define the random variable X. X is the proportion of people from the sample, 353 who support the candidate. 490 X is the 353 of people from the sample who support the candidate. X is the number of people from the population who support the candidate. b) In words, define p. p is the proportion of people from the population, 353 who support the candidate. 490 Op is the 353 of people from the sample who support the candidate. p is the proportion of people from the sample, 353 who support the candidate. 490
A political candidate has asked you to conduct a poll to determine what percentage of people support her. From a random sample of 490, 353 said they would support the candidate. A 95% confidence interval is constructed. a) In words, define the random variable X. X is the proportion of people from the sample, 353 who support the candidate. 490 X is the 353 of people from the sample who support the candidate. X is the number of people from the population who support the candidate. b) In words, define p. p is the proportion of people from the population, 353 who support the candidate. 490 Op is the 353 of people from the sample who support the candidate. p is the proportion of people from the sample, 353 who support the candidate. 490
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Transcribed Image Text:A political candidate has asked you to conduct a poll to
determine what percentage of people support her. From a
random sample of 490, 353 said they would support the
candidate. A 95% confidence interval is constructed.
a) In words, define the random variable X.
X is the proportion of people from the sample,
353
who support the candidate.
490
X is the 353 of people from the sample who
support the candidate.
X is the number of people from the population who
support the candidate.
b) In words, define p.
p is the proportion of people from the population,
353
who support the candidate.
490
p is the 353 of people from the sample who support
the candidate.
Op is the proportion of people from the sample,
353
who support the candidate.
490

Transcribed Image Text:Suppose the confidence interval (0.38, 0.63) represents the
proportion of Skyline College students who say Math is
their favorite subject.
Based on the confidence interval, does it appear that less
than 23% of Skyline College students say Math is their
favorite subject?
No, all the interval values are greater than 0.23
No, 0.23 is not contained in the interval
Yes, all the interval values are less than 0.23
Based on the confidence interval, is it likely 23% of Skyline
College students say Math is their favorite subject?
No, 0.23 is not contained in the interval.
Yes, 0.23 is not contained in the interval.
|Yes, all the interval values are greater than 0.23.
Based on the confidence interval, does it appear that more
than 23% of Skyline College students say Math is their
favorite subject?
Yes, 0.23 is not contained in the interval.
Yes, all the interval values are greater than 0.23.
No, 0.23 is not contained in the interval.
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