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3 years ago

15

Help please need help ASAP

1 answer:

Elanso [62]3 years ago

3 0

Answer:

g phone the other questions please let me that he had an amazing time to Suna tha wo boli kya mama I have a doctor and square footage clip for more details on Friday November this year and square footage clip and square footage of rectangular shape or comments regarding the questions that may arise in touch as soon I have received a sum of Plassey and sahi h jo the questions I had to the best of Plassey the questions. Aladdin Nam to Suna he hoga

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Create a sequence in which 1 1/4 is added to each number

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pantera1 [17]

Answer:

Step-by-step explanation:

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12.what is the probability that a boy and a girl chosen randsomly will be seniors?

zhenek [66]

$\frac{\textbf{1}}{\textbf{20}}$

Step-by-step explanation:

Probability= $\frac{\text{number of favourable outcomes}}{\text{total number of outcomes}}$

Probability for a randomly chosen girl to be senior= $\frac{\text{number of senior girls}}{\text{total number of girls}}$

Probability for a randomly chosen girl to be senior= $\frac{7}{8+11+9+7}=\frac{7}{35}=\frac{1}{5}$

Probability for a randomly chosen boy to be senior= $\frac{\text{number of senior boys}}{\text{total number of boys}}$

Probability for a randomly chosen girl to be senior= $\frac{9}{10+7+10+9}=\frac{9}{36}=\frac{1}{4}$

For two independent events,

Probability for both event 1 and event 2 to take place= $\text{probability of event 1} \times \text{probability of event 2}$

Since choosing boys and girls is independent,

Probability for both boy an girl chosen to be senior= $\text{probability for boy to be senior}\times\text{probability for girl to be senior}$

Probability for both boy and girl chosen to be senior= $\frac{1}{5} \times \frac{1}{4} = \frac{1}{20}$

So,required probability is $\frac{1}{20}$

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