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Snowcat [4.5K]
3 years ago
6

A group of high school students reports who has a job and who plays sports. The information is presented in the following Venn d

iagram. Given that a random student does not have a job, what is the probability that the student does not play sports? Question 18 options: .7 .6 .8 .12

SAT
2 answers:
shutvik [7]3 years ago
5 0

Answer: .6

Explanation: There are 60 students in this "universe." 20 have jobs. The random student does not. So that student is in the "complement" of 40 outside the jobs circle. (16 "sports" + 24 in the field outside the circles)

Of those 40, 24 do not play sports, which is what the question specifies. The chance is then 24/40 reduced: 6/10

So the chance of the random student selected from the group of "doesn't have a job" and "doesn't play sports" is .6

makkiz [27]3 years ago
5 0
The answer is 6 :. 6
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The number of mole of ethanol, CH₃CH₂OH the chemist will use in the experiment is 0.65 mole

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation:

Mole = mass / molar mass

<h3>How to determine the mole of CH₃CH₂OH</h3>

From the question given above, the following data were obtained:

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There are 23 countries in North America, 12 countries in South America, 47 countries in Europe, 44 countries in Asia, 54 countri
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The probability for each event follows below:

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P(E)= 0.24

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<h3>Probability</h3>

Probability can be defined as the possibility that an event will occur. For an event, the probability can be found from the ratio between the number of favorable outcomes for the event and the total number of outcomes.  Values of probability vary between 0 and 1.

A probability for an event is represented by P(A), P(B), etc. And exactly this that question asks for you.

1. Arrange the text of the question

       North America=23 countries

       South America= 12 countries

       Europe=  47 countries

       Asia= 44 countries

      Africa =54 countries

      Oceania= 14 countries

2. Find the total of countries

N_{total}=23+12+47+44+54+14=194

3. Find P(A)

A= the event that a country is in Asia= 44 countries. Therefore,

P(A)=\frac{numberofcountries of Asia}{Total number of countries } \\ \\ P(A)=\frac{44}{194} =0.23\\ \\ P(A)=0.23

4. Find P(E)

E= the event that a country is in Europe= 47 countries. Therefore,

P(E)=\frac{numberofcountries of Europe}{Total number of countries } \\ \\ P(E)=\frac{47}{194} =0.24\\ \\ P(E)=0.24

5. Find P(F)

F= the event that a country is in Africa= 54 countries. Therefore,

P(F)=\frac{numberofcountries of Africa}{Total number of countries } \\ \\ P(F)=\frac{54}{194} =0.28\\ \\ P(F)=0.28

6. Find P(N)

N= the event that a country is in North America= 23 countries. Therefore,

P(N)=\frac{numberofcountries of North America}{Total number of countries } \\ \\ P(N)=\frac{23}{194} =0.12\\ \\ P(N)=0.12

7. Find P(O)

O= the event that a country is in Oceania= 14 countries. Therefore,

P(O)=\frac{numberofcountries of Oceania}{Total number of countries } \\ \\ P(O)=\frac{14}{194} =0.07\\ \\ P(O)=0.07

8. Find P(S)

S= the event that a country is in South America= 12 countries. Therefore,

P(S)=\frac{numberofcountries of South America}{Total number of countries } \\ \\ P(S)=\frac{12}{194} =0.06\\ \\ P(S)=0.06

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