Solved: Confidence interval for the proportion of all scores, Basic Statistics

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Confidence interval for the proportion of all scores

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Q: From a large number of actuarial exam scores, a random sample of 375 scores is selected, and it is found that 270 of these 375 are passing scores. Based on this sample, find a 99% confidence interval for the proportion of all scores that are passing.

What is the lower limit of the 99% confidence interval?

What is the upper limit of the 99% confidence interval?

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Basic Statistics: Confidence interval for the proportion of all scores

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Basic Statistics: Confidence interval for the proportion of all scores

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