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Author Question: Which is true about a 98% confidence interval for a population proportion based on a given sample?I. ... (Read 223 times)

mckennatimberlake

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Question 1

We have calculated a 95% confidence interval and would prefer for our next confidence interval to have a smaller margin of error without losing any confidence. In order to do this, we can
I.   change the z* value to a smaller number.
II.  take a larger sample.
III. take a smaller sample.
◦ I only
◦ II only
◦ III only
◦ I and III
◦ I and II

Question 2

Which is true about a 98% confidence interval for a population proportion based on a given sample?
I.   We are 98% confident that other sample proportions will be in our interval.
II.  There is a 98% chance that our interval contains the population proportion.
III. The interval is wider than a 95% confidence interval would be.
◦ I only
◦ I and II
◦ III only
◦ II only
◦ None


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Marked as best answer by mckennatimberlake on Aug 30, 2019

emily12345

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mckennatimberlake

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Reply 2 on: Aug 30, 2019
Thanks for the timely response, appreciate it


chereeb

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Reply 3 on: Yesterday
:D TYSM

 

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