A field test for a new exam was given to randomly selected seniors. The exams were graded, and the sample mean and sample standard deviation were calculated. Based on the results, the exam creator claims that on the same exam, nine times out of ten, seniors will have an average score within 6% of 80%. Is the confidence interval at 90%, 95%, or 99%? What is the margin of error? Calculate the confidence interval and explain what it means in terms of the situation.

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A field test for a new exam was given to randomly selected seniors. The exams were graded, and the sample mean and sample standard deviation were calculated. Based on the results, the exam creator claims that on the same exam, nine times out of ten, seniors will have an average score within 6% of 80%. Is the confidence interval at 90%, 95%, or 99%? What is the margin of error? Calculate the confidence interval and explain what it means in terms of the situation.

Mathematics
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Can you mention someone for me please
the key phrase here is `nine times out of ten` which points us to a 90% confidence interval
90% of the confidence intervals generated will have the population parameter we're interested in
ok
So what would be the margin error
`seniors will have an average score within 6% of 80%` the target is 80%. Basically this is the stated population parameter the 6% is the error from the target. You can go 6% too high, or 6% too low
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So basically I was already given the answers within the question.
pretty much
they just wanted you to interpret it a different way
ok thank you, so that is it?
yeah there's one more part, but I'm sure you see what the confidence interval is
so what does the confidence interval mean? Sorry if I am bothering you
it means that we're 90% confident that the true mean is between 74% and 86% the true mean is usually at the center of the confidence interval
Ok Thank you
no problem

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