Environmental engineers are using data collected by weather data centers to learn how climate affects the sea ice. Of 535 ice melt ponds studied in a certain region, 104 were classified as having...

Extracted text: Environmental engineers are using data collected by weather data centers to learn how climate affects the sea ice. Of 535 ice melt ponds studied in a certain region, 104 were classified as having "first-year ice". The researchers estimated that about 19% of melt ponds in the region have first-year ice. Estimate, with 90% confidence, the percentage of all ice-melt ponds in the region that have first-year ice. Give a practical interpretation of the results. Construct a 90% confidence interval around the sample proportion of ice melt ponds with first-year ice. (Round to four decimal places as needed.) Interpret the confidence interval practically. Choose the correct answer below. O A. One can be 90% confident the true proportion of ice melt ponds in the region with first-year ice lies at the mean of the above interval, rather than at 19%. O B. Since 19% is not in the interval, one can be 90% confident the true proportion of ice melt ponds in the region with first-year ice is not 19%. OC. One can be 90% confident the true proportion of ice melt ponds in the region with first-year ice is within the above interval, and there is a 90% chance it is 19%. O D. Since 19% is in the interval, one can be 90% confident the true proportion of ice melt ponds in the region with first-year ice is 19%. O E. One can be 90% confident the true proportion of ice melt ponds in the region with first-year ice is within the above interval, though it is probably not 19%.