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Nimfa-mama [501]
3 years ago
8

Escribe 4 ejemplos de sucesos compuestos en el experimento "sacar cartas de una baraja española"

Mathematics
1 answer:
masha68 [24]3 years ago
7 0

Answer:

Step-by-step explanation:

Unclear question. However, here⅔'s a more likely clearer rendering;

"Write 4 examples of compound events in the experiment "drawing cards from a Spanish deck".

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In answering a question on a multiple-choice test, a student either knows the correct answer or guesses it. Let 0.7 be the proba
Dahasolnce [82]

Answer:

The probability is 0.9211

Step-by-step explanation:

Let's call K the event that the student know the answer, G the event that the student guess the answer and C the event that the answer is correct.

So, the probability P(K/C) that a student knows the answer to a question, given that she answered it correctly is:

P(K/C)=P(K∩C)/P(C)

Where P(C) = P(K∩C) + P(G∩C)

Then, the probability P(K∩C) that the student know the answer and it is correct is:

P(K∩C) = 0.7

On the other hand, the probability P(G∩C) that the student guess the answer and it is correct is:

P(G∩C) = 0.3*0.2 = 0.06

Because, 0.3 is the probability that the student guess the answer and 0.2 is the probability that the answer is correct given that the student guess the answer.

Therefore, The probability P(C) that the answer is correct is:

P(C) = 0.7 + 0.06 = 0.76

Finally, P(K/C) is:

P(K/C) = 0.7/0.76 = 0.9211

7 0
3 years ago
On Friday nights the local diner serves three main entrees, each with a choice of vegetable. The entrees are beef, chicken, and
Vlad [161]
C. chicken, spinach

(1 entree and 1 vegetable)
5 0
3 years ago
X = ?????????????????
Evgen [1.6K]

Answer:

4

Step-by-step explanation:

5 0
3 years ago
A circular swimming pool is installed in a rectangular shaped backyard. An underwater light is placed as its center, 16 feet fro
Daniel [21]
What is the question?
8 0
3 years ago
Write a formula that will yield the nth term of the sequence: 3,-2,-7,-12
RUDIKE [14]

Answer:

-5n + 8

Step-by-step explanation:

<u>1. What is the difference?</u>

  The sequence goes down by 5. This means that the formula will have -5n in it.

<u>2. Work out the term before the first term.</u>

    The first term is 3, and we know that the sequence goes up by 5. So, to get the term before 3 we would add 5.

3 + 5 = 8   Remember, this is positive 8. (+8)

<u>3. Put that term at the end of the equation. </u>

   We have -5n already and we just worked out the term before the first one which is positive 8 - so put that at the end of the equation.

-5n + 8  This is our answer!

Just to prove it works:

<em>Substitute:   n = term</em>

Lets see if we can get the 3rd term which is -7. (n = 3)

-5(3) + 8

-15 + 8 = -7

See, it works!

8 0
3 years ago
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