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brittanysanders
24.08.2019 •
Mathematics
941 divided by 2 in long division standard algorithm not using decimals
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Ответ:
Ответ:
[198.421, 241.579]
Step-by-step explanation:
If 220 registered voters out of 500 contacted favored a particular candidate, we can approximate the mean:
the proportion is
p = 220/500 = 0.44
We can approximate the standard deviation with
To find a 95% confidence interval estimate for the proportion of the population of registered voters that favors the candidate we must find values a, b such that the area under the Normal curve of mean 220 and standard deviation 11.01 on the interval [a, b] equals 95% = 0.95
We can work out those points with a spreadsheet and find
[a, b] = [198.421, 241.579]
(See picture attached)