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fgiga [73]
2 years ago
7

I need help and a explanation

Mathematics
1 answer:
nirvana33 [79]2 years ago
8 0

Answer:

Step-by-step explanation:

12(10/100)=$1.20

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An unprepared student makes random guesses for the ten​ true-false questions on a quiz. Find the probability that there is at le
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Answer:

0.999

Step-by-step explanation:

At least 1 correct means, 1 correct, 2 correct, 3 correct ... until 10 correct. That would be a long process to calculate.

<em>Instead we use the complement rule to calculate.</em>

<em>P(x\geq1)=1-P(x</em>

<em />

<em>So we need to find P(x<1). So this is getting 0 answers correct, or 10 incorrect.</em>

<em />

In true false question, probablity of correct is 1/2 and incorrect is 1/2, hence,

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