Math Problem Statement
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Part 1
A survey of adults in a certain country found that
8181%
believed that protecting the rights of those with unpopular views is a very important component of a strong democracy. Assume the sample size was
Complete parts (a) through (f) below.
Question content area bottom
Part 1
a. How many people in the sample felt this way?
The number of people in the sample that felt protecting the rights of those with unpopular views is a very important component of a strong democracy is
(Round to the nearest integer as needed.)
Part 2
b. Is the sample size large enough to apply the Central Limit Theorem? Explain. Assume the other conditions are met. Select the correct choice below and fill in the answer box(es) to complete your choice.
(Round to the nearest integer as needed.)
A.
No, the sample size is not large enough, since the expected number of successes is
enter your response here
and the expected number of failures is
enter your response here,
at least one of which is less than 10.
B.
Yes, the sample size is large enough, since the expected number of successes is
729729
and the expected number of failures is
171171,
both of which are greater than or equal to 10.
Your answer is correct.
C.
No, the sample size is not large enough, since the estimated standard error is
enter your response here,
which is less than 10.
D.
Yes, the sample size is large enough, since the estimated standard error is
enter your response here,
which is greater than or equal to 10.
Part 3
c. Find a 95% confidence interval for the proportion of adults in the country who believe that protecting the rights of those with unpopular views is a very important component of a strong democracy.
The 95% confidence interval is
(. 519.519,. 581.581).
(Round to three decimal places as needed.
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Sampling
Confidence Intervals
Formulas
Standard Error formula
Margin of Error formula
Theorems
Central Limit Theorem
Suitable Grade Level
High School
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