6. There are 16 cleaning sponges in a bin at Walmart. 7 are green and the...

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6. There are 16 cleaning sponges in a bin at Walmart. 7 aregreen and the remaining 9 are blue. Suppose I randomly select 4sponges. What is the probabilitythat:Â Â Â (Round to 4 (FOUR) decimalplaces.)
Â Â Â Â Â Â Â Â Â Â Â
Â Â Â Â Â Â Â Â Â Â Â Â a.Â Â Â Â Â Â Â Â Â Allfour are green?
Â Â Â Â Â Â Â Â Â Â Â Â b.Â Â Â Â Â Â Â Â Â Allfour are blue?
Â Â Â Â Â Â Â Â Â Â Â Â c.Â Â Â Â Â Â Â Â Â 2or 3 are blue?
Â Â Â Â Â Â Â Â Â Â Â
Â Â Â Â Â Â Â Â Â Â Â Â d.Â Â Â Â Â Â Â Â Â Noneare green?
Â Â Â Â Â Â Â Â Â Â Â Â e.Â Â Â Â Â Â Â Â Â 3or fewer are green?

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3.8 Ratings (491 Votes)

Please note nCr n nrr Also some standard formulae are as below i nCr nCnr eg 5C2 5C3 ii nC1 n eg 5C1 5 iii nC0 1 eg 5C0 1 and iv nCn 1 eg 5C5 1 Probability Favourable OutcomesTotal Outcomes Total Outcomes choosing any 4 balls out of the 16 16C4 161644 16124 16 15 14 13 12 12 4 3 2 1 1820 a All 4 are green See Answer

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