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LONG ANSWER4. The mean ofANSWER TYPE PROBLEMSmean of the following data is 38.7. Find the missing frequencies f, and 12.0-100-10 10-202010-20 20-30Classes30-40 40-50 50-6060-70TotalFrequency 5 7 fi3f2 96 100(HL]

Answer»

class frequency

20-30 6

30-40 F1

40-50 16

50-60 13

60-70 f2

70-80 2

total 50

YOUR ANSWER IS F1=9 and F2=4

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