Answer:
0.424<0.538
Step-by-step explanation:
Given the confidence interval 0.491 ± 0.057, we are to express in the form
p-E < p + E where E is the error
From the interval E = 0.057, p = 0.591
p±E = (p+E, p-E)
0.491 ± 0.057 = (0.491-0.057, 0.491+0.057)
0.491 ± 0.057 = (0.434, 0.548)
Hence the interval in the form
p-E < p + E is 0.424<0.538
