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Likurg_2 [28]
3 years ago
7

Help plz I am so confused

Mathematics
1 answer:
ankoles [38]3 years ago
8 0

The answer to number 18 is -  0.25 or 1/4


If you need help with the other ones ask.


<em>Hope this will help :)</em>

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for events A and B, P(A)= 3/14 and P(B)= 1/5. Also, P(A and B)= 3/65. Are A and B independent events?
Lady_Fox [76]

No, A and B are not independent events

Step-by-step explanation:

Let us study the meaning independent probability  

  • Two events are independent if the result of the second event is not  affected by the result of the first event
  • If A and B are independent events, the probability of both events  is the product of the probabilities of the both events  P (A and B) = P(A) · P(B)

∵ P(A) = \frac{3}{14}

∵ P(B) = \frac{1}{5}

∴ P(A) . P(B) = \frac{3}{14} × \frac{1}{5}

∴ P(A) . P(B) = \frac{3(1)}{14(5)}

∴ P(A) . P(B) = \frac{3}{70}

∵ P(A and B) = \frac{3}{65}

∵ P(A) . P(B) = \frac{3}{70}

- The two answers are not equal

∴ P (A and B) ≠ P(A) · P(B)

- In independent events P (A and B) = P(A) · P(B)

∴ A and B are not independent events

No, A and B are not independent events

Learn more:

You can learn more about probability in brainly.com/question/13053309

#LearnwithBrainly

5 0
3 years ago
Help me please I don't understand it.
Dennis_Churaev [7]

Answer:

Sample Space =  {A, B, C, D, E, F}.

Sample space for  choosing C to F = {C, D, E, F}.

Step-by-step explanation:

All six letters are included in the first set of possible outcomes.

Four letters (C to F) are included in the second  set of possible outcomes.

4 0
3 years ago
Read 2 more answers
Solve the linear system of equations using the linear combination method.
Mrrafil [7]

Answer:

x=-4

y=-4

Step-by-step explanation:

We are going to eliminate the variable x. In order to do this, we are going to make the coefficients the same by multiplying the second equation by 2

mark brainliest  :)

6 0
3 years ago
Brock heard that as a general rule, he should spend no more than one week's pay on rent. If Brock's salary is $25,200 per year,
olasank [31]
There are about 52 weeks in a year, so divide 25200 by 52 (484.6). He gets paid $484.60 per week. So he should spend a maximum of C. $485 on rent per month.
8 0
3 years ago
Read 2 more answers
If the average grade of an English class rose from 70 to 85, what is the approximate percent increase?
FrozenT [24]

Answer:

The correct answer is actually around 21%. Are you sure the question wasn't asking what the approximate percent decrease from 85 to 70 was? Because in that case it would be around 17%.

Step-by-step explanation:

6 0
3 years ago
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