* Question 1: Teachers organized activities for three classes of 24 pupils and four classes of 26 pupils. What was the total number of pupils involved 24 26 176 50 150 Question 2: As part of a science lesson, pupils were asked to stretch a spring to extend its length by 50%. The original length of the spring was 30cm. What should be the length of the extended spring? Answer in cm 30 45 15
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Step 1: Calculate the total number of pupils in the three classes of 24 pupils: 3 classes * 24 pupils/class = 72 pupils Show more…
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Supreeta N.
Use the following information to answer the next four questions. The midterm grades in a chemistry exam in a class with 30 students were: 30, 35, 40, 45, 50, 52, 55, 60, 62, 64, 65, 65, 68, 70, 72, 72, 74, 75, 75, 75, 76, 78, 78, 81, 83, 83, 84, 85, 74, 100. 14. The outlier in this data set is: A. 35 B. 30 C. 40 D. Both A & B are true 15. 25% of the test scores are located above: A. 75 B. 76 C. 78 16. The range for the middle 50% of this data set is: A. 78 B. 60 C. 18 17. If we do not assume anything about the shape of the distribution for this data set, then the percentage of scores that will fall below 35.5 or above 99.5 is at least: A. 12.5 B. 16 C. 25
On the first chemistry test, 12 students got As, 18 students got Bs, and 20 students got Cs. (1.4) a. What is the percentage of students who received $\mathrm{Bs}$ ? Express your answer to the ones place. b. What is the percentage of students who received $\mathrm{Cs}$ ? Express your answer to the ones place.
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