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blsea [12.9K]
3 years ago
14

An exam consists of 15 true-or-false questions. If a student guesses at every answer, what is the probability that he or she wil

l answer exactly 9 questions correctly? (Round your answer to three decimal places.).
Mathematics
1 answer:
Bas_tet [7]3 years ago
4 0
<span>C(15,9) * (1/2)^9 * (1/2)^6 = 5005/32768 = .153 approx</span>
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6 0
3 years ago
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Klio2033 [76]
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8 0
3 years ago
TIMED TEST PLEASE HELP
xxMikexx [17]
1 ) first offer
total payments
375.76×12×4
=18,036.48
Interest paid
18,036.48−16,000
=2,036.48
Second offer
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390.61×12×4
=18,749.28
Interest paid
18,749.28−16,000
=2,749.28
Larry will save of taking 6% loan
2,749.28−2,036.48=712.8. .answer

2) credit card 1
Total payments
277.09×12
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Interest paid
3,325.08−3,000
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Credit card 2
Total payments
152.69×12×2
=3,664.56
Interest paid
3,664.56−3,000
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Susan will save
664.56−325.08
=339.48...answer

Hope it helps!
6 0
3 years ago
Read 2 more answers
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