ECON15B UCI Confidence Interval Formula and Sample Standard Deviation HW
a. Find a recent article in the news that uses a confidence interval for its reporting
(for example, it states poll results).
b. Identify the appropriate procedure for this problem
c. Write down the confidence interval formula for this problem
d. Identify values for
i. sample mean,
ii. sample standard deviation,
iii. sample size,
iv. confidence level,
vi. margin of error
e. Construct confidence interval estimate.
f. Interpret the confidence interval.
g. Write a brief summary of the article.
h. Include a link to the article.
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