Laura wants to find the average height of students in the 12th grade at East High School. So she will use a sample of students in the 12th grade to find the average height. Answer the questions below. (a) Which unit(s) could be used for the unit of measuremiant? Check all that apply. O centimeters seconds hours meters Omillimeters (b) Which of the procedures below would be the best way to find the average height? O Randomly pick 3 students from the 12th grade and have them state their own heights. O Randomly pick 44 students from the 12th grade and measure their heights. O Measure the heights of 3 volunteers from the 12th grade. Ask for 44 volunteers from the 12th grade to state their own heights.

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