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Anit [1.1K]
3 years ago
15

B-3±6-2b i need it know pls help me

Mathematics
1 answer:
aleksklad [387]3 years ago
3 0
Answer : b=3

Hope this helps have a great day! :)
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Step-by-step explanation:

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<h3>The probability of  student passing the quiz with  at least 50% of the questions correct is 0.05457.</h3>

Step-by-step explanation:

Here, the total number of T/F question = 10

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Here, the possibility of answering a question correctly  = (\frac{1}{2})   = p = 0.5

Also, the possibility of answering a question wrong  = (\frac{1}{2})  = q = 0.5

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P(answering 8 correct answer)  = ^{10}C_8(p)^8(q)^2 = ^{10}C_8(0.5)^8(0.5)^2  = 0.0439

P(answering 9 correct answer)  =  ^{10}C_9(p)^9(q)^1 = ^{10}C_9(0.5)^9(0.5)^1  = 0.0097

P(answering 10 correct answer)  = ^{10}C_{10}(p)^{10}(q)^0 = ^{10}C_{10}(0.5)^{10}(0.5)^0  = 0.00097

So, the total Probability   = P(8) + P(9) + P(10)

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3.) A glass of water is being filled up slowly. It initially starts out with 4
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Step-by-step explanation:

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A Family purchased tickets to the movies in spent a total of $40.75. The family purchase five tickets there was a $.90 processi
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Answer:

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Total amount spent on the ticket   = $40.75

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