danielrhema12345 danielrhema12345

03-02-2024
Mathematics

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Two different age groups were surveyed about the amount of time they spent on social media. The results are shown on the two frequency polygons below. The same time intervals were used for both graphs. 12-year old students Xuanbay D 0 10 20 30 40 50 60 70 80 Time (mins) 70 Frequency 40 LL 30 20 18-year old students 0 10 20 30 40 50 60 70 80 Time immis) a) How many 18-year old students took part in the survey? I b) How many more 18-year old students than 12-year old students spent between 25 and 35 mins on social media? TI

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