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egoroff_w [7]
3 years ago
9

The contingency table below gives the counts of students by activities and gender. Band Sports Debate Total Male 105 320 7 432 F

emale 105 160 14 279 Total 210 480 21 711 If a student is randomly selected, what is the probability that a student is female or plays sports?
Mathematics
1 answer:
Ber [7]3 years ago
6 0

Answer:

599/711

Step-by-step explanation:

           Band Sports Debate Total

Male     105 320  7         432

Female 105 160         14         279

Total 210 480          21          711


P(female or plays sports)

We want the probability that they are female or play sports, but we cannot double count the female sports players, so we subtract them

 P(female) + P (sports) - (female and sports)

female/total + sports/total - female sports/ total

279/711 + 480/711 - 160/711

599/711

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if you divide a positive number by 12, the answer would be less than the original number? always, sometimes, or never​
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Answer:

Always

Step-by-step explanation:

The rules for positive numbers is that addition and multiplication makes numbers larger. Subtraction and division makes numbers smaller.

Since 12 is a positive number, the result of dividing a positive number by 12 will make it smaller.

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6 0
2 years ago
7 = 3t - 3 - 2+ + 6. <br><br>Justification: ? property​
Volgvan

Answer:

7 = 3t + 1

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4 0
3 years ago
7(z+2)-3z=44 quiero que me ayuden a resolver este problema por favor
slega [8]
No hablo expanol

7(z+2)-3z=44
7z+14-3z=44
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4z+14=44
-14        -14
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4z=30
1/4  1/4
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5 0
3 years ago
I need help thank you
Juliette [100K]

Answer:


Step-by-step explanation:

The key and the most critical step is to draw the line first. Don't do anything else before that.

(2,-8) (-2,-8)

What you find out is that the y value is always - 8.

So the line has no slope and any x value

y = 0*x + b

y = - 8 is the equation of the line.

8 0
3 years ago
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