No of observation in groú is 40 the averge of the first 10 membersis 4.5 and tge averge of the remaining 30member is 3.5 the averge of whole grroup is
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1
Answer:
total of the whole group will be = 4.5 × 10 + 30 × 3.5 = 45 + 105 = 150
average = 150 ÷40 = 3.75
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3
Answer:
3.45
Step-by-step explanation:
is the correct answer
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