15 \( 1(2 / 2) \) 2 (1/1) n 3 (1/1) n 4 (4) n 5 (1/1) n \( 6(2 / 2) \) n 7 (1/1) on 8 (1/1) on \( 9(2 / 2) \) In the last three months, 424 boys and 320 girls were seen by doctors in the ER. 305 of those children were six-years-old or under. a. By rounding the values to the nearest ten, estimate the number of children seen in the ER. \( \square \) b. Using the original values, calculate the exact number of children seen in the ER. \( \square \) c. By rounding the values to the nearest ten, estimate the number of children over the age of six. \( \square \)

Let's dive into your questions! To estimate the total number of children seen in the ER, you round both boys and girls to the nearest ten. So, \( 424 \) becomes \( 420 \) and \( 320 \) becomes \( 320 \). Adding these together gives you \( 420 + 320 = 740 \). So, the estimated number of children seen in the ER is \( 740 \). For the exact calculation, simply add the original values: \( 424 \) boys + \( 320 \) girls = \( 744 \). Thus, \( 744 \) children were seen in the ER. Now, to estimate the number of children over the age of six, take the total number of children seen, which is \( 744 \), and subtract the estimated number of children who are six years old or under. The \( 305 \) children who are six or under rounds to \( 310 \), leading us to \( 740 - 310 = 430 \). Therefore, the estimated number of children over the age of six is \( 430 \). Keep this in mind: rounding makes calculations faster, but you still want to verify with the exact values for clarity! Remember, in statistics, accuracy often beats rough estimates.