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dalvyx [7]
2 years ago
11

The probability of a certain event occurring is 0.27. What is the probability that the event will NOT occur?

Mathematics
2 answers:
gulaghasi [49]2 years ago
8 0
<span>The probability of the event that will not occur is 0.73.

</span>
Yakvenalex [24]2 years ago
3 0

Answer:

Option A - 0.73  

Step-by-step explanation:

Given : The probability of a certain event occurring is 0.27 →P(A)=0.27

To find : The probability that the event will NOT occur → P(A^c)

Solution: Since we know the sum of probability is 1

According to rule of complement → P(A^c) + P(A) = 1

P(A)= 0.27 , put value we get

P(A^c) + 0.27 = 1

\rightarrow P(A^c)= 1-0.27

\rightarrow P(A^c)=0.73

Therefore, option A is correct

Probability that the event will not occur= 0.73


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<span>
The best and most correct answer among the choices provided by the question is </span><span>A. Between 0.05 and 0.01 </span> .    
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7 0
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Read 2 more answers
On Monday 4 bricklayers took 3 hours to lay a total of 4200 bricks.
lisabon 2012 [21]
<h2>Hello!</h2>

The answer is:

It will take 4.5 hours for two bricklayers to lay a total of 3150 bricks.

<h2>Why?</h2>

From the statement, we know that on Monday, bricklayers took 3 hours to lay a total of 4200 bricks.

So, we have that the rate of the four bricklayers is given by the following equation:

Production=Rate*Time\\\\Rate=\frac{Production}{time}

Rate=\frac{4200bricks}{3hours}=\frac{1400bricks}{hour}

Therefore, we have that the rate of the four bricklayers is 1400 bricks per hour, meaning that each bricklayer can lay 350 bricks per hour.

Now, to calculate how many hours it will take to the 2 bricklayers to lay a total of 3150, we need to divide the calculated rate (for bricklayers) by two, since there are only 2 bricklayers working on Tuesday.

So, calculating the time, we have:

Production=\frac{Rate}{2}*Time

3150bricks=\frac{\frac{1400bricks}{hour}}{2}*Time

3150bricks*2*\frac{1hour}{1400bricks}=Time

6300bricks*\frac{1hour}{1400bricks}=Time

Time=4.5hours

Hence, we have that it will take 4.5 hours for two bricklayers to lay a total of 3150 bricks.

Have a nice day!

7 0
2 years ago
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