anonymous
  • anonymous
In a sample of 26 hand-held calculators, 20 are known to be nonfunctional. If 6 of these calculators are selected at random, what is the probability that exactly 4 in the selection are nonfunctional? Round to the nearest thousandth. A. 0.667 B. 0.316 C. 0.769 D. 0.300 E. 0
Mathematics
schrodinger
  • schrodinger
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amistre64
  • amistre64
20 out of 26 are bad.... thats a ratio of: 20/26 = 10/13 = 1/1.3 1:1.3 = 6:x i think will give the probablity of how many are bad
amistre64
  • amistre64
then 4/6 should give you something along the lines of figuring out the rest...

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