EggWithWheels
12.08.2019 •
Mathematics
Apoll asked adults in a certain country whether immigration was a good thing or a bad thing for the country. out of 10781078 respondents, 659659 said it was a good thing. a. what percentage of those taking the poll said immigration was a good thing? b. check the conditions to determine whether you can apply the clt to find a confidence interval. c. find a 95% confidence interval for the proportion who believe immigration is a good thing.
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Ответ:
a. Given : Sample size : n= 1078
The number of adults said it was a good thing= 659
Then , the proportion of success :
b. The conditions to determine whether you can apply the CLT to find a confidence interval are :-
The data must be randomly sampled. The sample size must be large (n>30).The sample values should be independent of each other.Since the given data satisfies all the above conditions , so we can apply the CLT to find a confidence interval.
c. Given : Significance level :
Critical value :
The confidence interval for population proportion is given by :-
Hence, a 95% confidence interval for the proportion who believe immigration is a good thing is (0.582, 0.64).
Ответ:
Step-by-step explanation:
3x-5