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Strike441 [17]
2 years ago
7

Pls explain how to solve it! (Will mark brainylist)

Mathematics
1 answer:
brilliants [131]2 years ago
8 0
4d I think it is right hope that helps
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Few students manage to complete their schooling without taking a standardized admissions test such as the Scholastic Achievement
slega [8]

Answer:

Step-by-step explanation:

Assuming there is a punitive removal of one point for an incorrect response.

Five undiscernable choices: 20% chance of guessing correctly -- Expectation: 0.20*(1) + 0.80*(-1) = -0.60

Four undiscernable choices: 25% chance of guessing correctly -- Expectation: 0.25*(1) + 0.75*(-1) = -0.50

I'll use 0.33 as an approzimation for 1/3

Three undiscernable choices: 33% chance of guessing correctly -- Expectation: 0.33*(1) + 0.67*(-1) = -0.33 <== The approximation is a little ugly.

Two undiscernable choices: 50% chance of guessing correctly -- Expectation: 0.50*(1) + 0.50*(-1) = 0.00

And thus we see that only if you can remove three is guessing neutral. There is no time when guessing is advantageous.

One Correct Answer: 100% chance of guessing correctly -- Expectation: 1.00*(1) + 0.00*(-1) = 1.00

6 0
3 years ago
What is 1/4 times 48
svetlana [45]
Simplifiy the answer it'll become 2
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A graduate statistics class is unhappy with the midterm grades. The majority of students scored 45 or below on a 100-point scale
murzikaleks [220]

Answer:OI>>>

Step-by-step explanation:

4 0
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150=3/5x what does x equal?
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Answer:

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Step-by-step explanation:

150/3=50

50*2=100

150+100=250

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The following spinner has four sections. There are equal sections for 1, 4, and 3. The section for 2 is twice as large as each o
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gorge bush doesn't care

Step-by-step explanation:

about black people ~ ye

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