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Montano1993 [528]
3 years ago
11

Thanks that helped a lot with my math homework!:):):)

Mathematics
1 answer:
frosja888 [35]3 years ago
8 0
:):):):):):):):):):)
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If a student was randomly guessing while completing a 20 question multiple choice exam, what is the probability they would score
mario62 [17]

Answer:

you want 4 correct and 16 incorrect

there are 20 questions

each question has four answers, so

P(right answer) = 1/4

P(wrong answer) = 3/4

----

Since you want 4 correct of 20 we have a combination of 20C4

This is a binomial problem where p = 1/4, q = 3/4 and we get

(20 "choose" 4)*(probability correct)^(number correct)*(probability incorrect)^(number incorrect)

putting numbers in we get

(20c4)*(1/4)^4*(3/4)^16

This gives us

~ .189685

Step-by-step explanation:

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3 years ago
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Answer: 54:150

Step-by-step explanation:

The ratio of bass to catfish in a pond can be written as 54:150

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Aline has a stope of 3 and passes through the point (0,6). What is its equation in
Akimi4 [234]

Answer:

Step-by-step explanation:

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Q=P(R+R) (SOLVE FOR P)
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Isolate the variable by dividing each side by factors that don't contain the variable. p=q/2r
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A. 55<br> b. 70<br> c. 110<br> d. 125
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