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Verdich [7]
3 years ago
9

The probability that you roll a 3 on a six-sided die is start fraction one over six end fraction. The probability that you flip

a coin that lands on tails is start fraction one over two end fraction. The probability that you roll a 3 on a six-sided die and you flip a coin that lands on tails is start fraction one over 12 end fraction. What is the probability of flipping a coin and it landing on tails, given that you rolled a 3 on a six-sided die? Are these two events independent?
Mathematics
1 answer:
valentinak56 [21]3 years ago
5 0
Seems like a trick question to me, I think what this question is asking is "If you roll a 3 on a die, what is the chance of getting tails on a coin." The answer would then be 1/2 (one over two) and the events are independent because rolling a 3 on a die doesn't affect the chances of getting tails on a coin.
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The answer is C

So how?

I multiplied 48*.19= 9.12 then subtracted that from 48 and got 38.88 which rounds to 39

C is the answer

I hope this helps! :D
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2 years ago
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3 years ago
A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was 14901490 and the standard dev
kicyunya [14]
<h2>Answer with explanation:</h2>

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We know that generally , z-scores lower than -1.96 or higher than 1.96 are considered unusual .

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z=\dfrac{1900-1490}{320}\approx1.28

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For x= 1240

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