Use the relative frequency histogram that follows to calculate the proportion of measurements falling into the given interval. Remember that the classes include the left boundary point, but not the right. A relative frequency histogram has a horizontal axis labeled "x" with values from 30.25 to 34.75 and a vertical axis labeled "Relative Frequency" with values from 0.00 to 0.45. The relative frequency histogram has 8 bars of equal width. Each bar is associated with an interval and an approximate value as listed below.

• 30.50 to 31.00: 0.15
• 31.00 to 31.50: 0.00
• 31.50 to 32.00: 0.00
• 32.00 to 32.50: 0.05
• 32.50 to 33.00: 0.40
• 33.00 to 33.50: 0.15
• 33.50 to 34.00: 0.20
• 34.00 to 34.50: 0.05

33 or more