Consider a 2008 study that sampled a randomly selected group of404,000 Americansand asked if they had received adequate sleep over the last month. The percentages for each surveyed age group (20s, 30s, 40s,------,70s) saying they had enough sleep are shown by the blue dots. The estimated percentages of those saying they had enough sleep are shown by the black dots. Use the information to answer the following questions. A graph containing a line and two sets of points has a horizontal axis labeled "Age" and "x" with values from 0 to 90 and a vertical axis labeled "Percent that said they Received Adequate Sleep" and "y" with values from 0 to 90.

• The line is black and goes up and right passing through the first set of points, which are also black. The locations and labels of the first set of points are as follows.
  • (20, 10.02)
  • (30, 21.92)
  • (40, 33.82)
  • (50, 45.72)
  • (60, 57.62)
  • (70, 69.52)
• The second set of points are blue. The locations and labels of the second set of points are as follows.
  • (20, 23)
  • (30, 22)
  • (40, 23)
  • (50, 30)
  • (60, 55)
  • (70, 83)

Determine the percent error for the respondents in their 60s. Round to the nearest hundredth. %Using the 5% guideline, is the estimate for the respondents in their 60s a good estimate?