SOLUTION: A machine produces 9 inch latex gloves. A sample of 15 gloves is selected, and it is found that 8 are shorter than they should be. Find the 99% confidence interval on the proportio
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Question 269676: A machine produces 9 inch latex gloves. A sample of 15 gloves is selected, and it is found that 8 are shorter than they should be. Find the 99% confidence interval on the proportion of all such gloves that are shorter than 9 inches Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A machine produces 9 inch latex gloves. A sample of 15 gloves is selected, and it is found that 8 are shorter than they should be. Find the 99% confidence interval on the proportion of all such gloves that are shorter than 9 inches
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sample proportion: 8/15 = 0.53
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standard error: E = invNorm(0.995)*sqrt[0.53*0.47/15] = 0.33
CI: 0.53-0.33 < p < 0.53+0.33
CI: 0.20 < p < 0.86
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Cheers,
Stan H.
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