Answer:
At the start of the war, the Union didn't have a very organized spy network. Although they had a lot of spies, they were usually sent out by individual generals or leaders in the government. The information wasn't communicated very well or passed on to the people who really needed it. The Union had a distinct advantage in the war as they gained a significant amount of military intelligence from slaves and former slaves.
As the war continued, the lead generals of the North had a spymaster who would organize and gather the information from the spy network.
Answer:
0.2454 ≤ x ≤ 0.2852
Explanation:
Given the following parameters:
Number of students = 410
Number of students that own their cars = 130
Hence we have Proportion of those who own a car (P) = 130/490 = 0.2653
Thereby, at 95% confidence, Z = 1.96
Sample size is represented as N = 490
Confidence interval = P+/- Z * Sqrt (P (1-P) / N)
=> 0.2653 +/- 1.96 * Sqrt (0.265 (1-0.265) / 490)
=> 0.2653 +/- 0.0199
Therefore, for any randomly selected student (y), the probability that he/she owns a car is;
0.2454 ≤ x ≤ 0.2852
