Biased Dice: one red face, all other faces are white

qwergfa21

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8. A dice has one red face; the other faces are colored white. The dice is biased. Sophie rolled the dice 200 times. The dice landed on the red face 46 times. The dice landed on the white face the other times. Sophie rolls the dice again.

a. Estimate the probability that the dice will land on a white face.

Each face of a different dice is either rectangular or hexagonal. When this dice is rolled, the probability that it will land on a rectangular face is 0.85. Billy rolls this dice 1,000 times.

b. Estimate the number of times it will land on a rectangular face.




any help?
 
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8. A dice has one red face; the other faces are colored white.
Should we assume that the die has six sides?

The dice is biased. Sophie rolled the dice 200 times. The dice landed on the red face 46 times.
Assuming that this is representative, what is the probability of landing on the red face on any given throw? (Hint: Divide.)

The dice landed on the white face the other times. Sophie rolls the dice again.

a. Estimate the probability that the dice will land on a white face.
Hint: Subtract from 1.

Each face of a different dice is either rectangular or hexagonal. When this dice is rolled, the probability that it will land on a rectangular face is 0.85. Billy rolls this dice 1,000 times.

b. Estimate the number of times it will land on a rectangular face.
Hint: Multiply. ;)
 
Should we assume that the die has six sides?

Assuming that this is representative, what is the probability of landing on the red face on any given throw? (Hint: Divide.)

Hint: Subtract from 1.

Hint: Multiply. ;)

It's me same guy who asked the question. Had some logging in issues had to make another account. Anyway

a) 46 / 200 = 0.23. 1 - 0.23= 0.77

b) 0.85 x 1000 = 850times?

correct?

thanks:cool:
 
Should we assume that the die has six sides?


Assuming that this is representative, what is the probability of landing on the red face on any given throw? (Hint: Divide.)


Hint: Subtract from 1.


Hint: Multiply. ;)

a) 46 / 200 = 0.23 , 1 - 0.23 = 0.77

b) 1000 x 0.85 = 850 times?


correct? Thanks
 
Your reply is quite cryptic. I will guess that you are posting replies to specific questions, but omitting all reasoning.

8. A dice has one red face; the other faces are colored white.
Should we assume that the die has six sides?
You post no response to this. I will guess that your answer was "yes".

The dice is biased. Sophie rolled the dice 200 times. The dice landed on the red face 46 times.
Assuming that this is representative, what is the probability of landing on the red face on any given throw? (Hint: Divide.)
a) 46 / 200 = 0.23.
So you divided the number of successes (being rolls that landed on red) by the total number of rolls, thus obtaining a decimal, which represented the probability, "0.23" (or 23%), of rolling a red.

The dice landed on the white face the other times. Sophie rolls the dice again.

a. Estimate the probability that the dice will land on a white face.
Hint: Subtract from 1.
1 - 0.23= 0.77
Since rolling a white has a probability equal to "(the probability of any outcome) less (the probability of an unsuccessful outcome [being rolling a red])", the probability of rolling a white is equal to 1 - 0.23 = 0.77, or 77%.

If this was what you meant, then I agree with your result.

Each face of a different dice is either rectangular or hexagonal. When this dice is rolled, the probability that it will land on a rectangular face is 0.85. Billy rolls this dice 1,000 times.

b. Estimate the number of times it will land on a rectangular face.
Hint: Multiply.
b) 0.85 x 1000 = 850times?
So you took the probability of a success on any particular roll, being 0.85 (or 85%), and multiplied it by the total number of rolls, being 1,000, to obtain 0.85 * 1,000 rolls = 850 rolls.

If this was what you meant, then I agree with your result.
 
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