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Nana76 [90]
3 years ago
14

An urn contains r red balls and b blue balls. One ball is selected at random from this urn, its color is recorded and it is retu

rned to the urn along with m additional balls of the same color as chosen. Another single ball is randomly selected from the urn (now containing r b m balls) and it is observed that the ball is blue. What is the conditional probability that the first ball selected is red given that the 2nd ball selected is observed to be blue?
Mathematics
1 answer:
nadezda [96]3 years ago
5 0

Answer:

Zero

Step-by-step explanation:

The probability of the ball being red after first selection is = (r) ÷ (r+b)

The probability of the ball being blue after first selection is = (b) ÷ (r+b)

If the ball selected is red, the total number of balls after its returned together with m number of red balls is = r+b+m

The probability of the  selection doesn't depend on the second selection, hence condition probability is zero.

However the probability of the second selection depends on the first selection.

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Mrac [35]
Hello!

You subtract the amount of flour you started with by the amount you used

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Hope this helps!
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Answer:

(a) Minimum red blood cells 5.744 million cells per micro liter

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Step-by-step explanation:

Z-score formula is = \frac{x-u}{Standard deviation}

Z-score = \frac{x-5.5}{0.4}

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6 0
3 years ago
Write the equivalent fraction with a denominator of 100. <br> 9/10 = ?/100.
choli [55]

Answer:

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Step-by-step explanation:

Find common denominators. Note that what you multiply to the denominator (bottom number of the fraction), you must also multiply to the numerator (top number of the fraction).

In this case, you are multiply 10 to both the numerator and denominator, as:

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Multiply 10 to the numerator:

? = 9 * 10

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90 is your answer.

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