From a large number of actuarial exam scores, a random sample of 250 scores is selected, and it is found that 185 of these 250 are passing scores. Based on this sample, find a 90% confidence interval for the proportion of all scores that are passing. Then find the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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From a large number of actuarial exam scores, a random sample of 250 scores is selected, and it is found that 185 of these 250 are passing scores. Based on this sample, find a 90%  confidence interval for the proportion of all scores that are passing. Then find the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places.

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