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ella [17]
3 years ago
15

Which best estimate of the sum of 5 1/5 and 8 5/6

Mathematics
1 answer:
Reika [66]3 years ago
7 0

Answer:

14 1/30

Step-by-step explanation:

convert the fractions so that the LCF is the denominator

1/5---->6/30

5/6----->25/30

5 6/30+8 25/30

13 31/30

14 1/30

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Step-by-step explanation:

  1. subtracting 1 from sample size: 83-1= 82
  2. Note Mean=21.5 and standard deviation=2.5
  3. Subtracting confidence interval from 1 and dividing by 2: (1-0.95)/2=0.025
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