Step 1 :a) Sketch the normally distributed curve with a mean of 180 years and a standard deviation of 40 years.
Step 2 :b) Since 68% of the data falls within 1 standard deviation of the mean, the age range is \(180 - 40 = 140\) years to \(180 + 40 = 220\) years.
Step 3 :c) Since 95% of the data falls within 2 standard deviations of the mean, the age range is \(180 - 2(40) = 100\) years to \(180 + 2(40) = 260\) years.
Step 4 :d) To find the percentage of turtles living more than 220 years, we look at the area to the right of 220 on the normal curve. This is 1 standard deviation above the mean, so approximately 16% of turtles will live more than 220 years.
Step 5 :e) To find the percentage of turtles living more than 260 years, we look at the area to the right of 260 on the normal curve. This is 2 standard deviations above the mean, so approximately 2.5% of turtles will live more than 260 years.