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21 July, 17:16

The stem-and-leaf plot below shows the number of pages each student in the class read the previous evening. A stem and leaf plot showing the pounds of food collected is shown. The stems from top to bottom are 0, 1, 2, 3, 4, 5. The first column of leaves is 5, 2, 2, 3, 2, 7. The second column of leaves is 0, 3, 4, 5, 4, blank. The third column of leaves is 5, 5, 6, 6, 6, blank. The fourth column of leaves is 8, 8, 7, blank, blank, blank. The fifth column of leaves is blank, 8, 7, blank, blank, blank. The sixth column of leaves is blank, 9, 7, blank, blank, blank. According to the plot, 75% of students read less than

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  1. 21 July, 20:39
    0
    75% students read less than 35 pages.

    Step-by-step explanation:

    The stem and leaf plot is given below

    0 | 5 0 5 8

    1 | 2 3 5 8 8 9

    2 | 2 4 6 7 7 7

    3 | 3 5 6

    4 | 2 4 6

    5 | 7

    Count the students in each row.

    Row 1 = 4 students

    Row 2 = 6 students

    Row 3 = 6 students

    Row 4 = 3 students

    Row 5 = 3 students

    Row 6 = 1 student

    Total students = 23 students

    75% of 23 students = 0.75/100 · 23 = 12.25 students

    75% of 23 students ≅ 17 students

    From the stem and leaf plot, 17th student read 33 pages while 18th student reads 35 pages.

    Which means

    75% students read less than or equal to 33 pages.

    OR

    75% students read less than 35 pages
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