# Jon has 8 blue marbles and 4 red marble sin a bag. he took 1 marble from the bag na fthen a second marble without replacing the first one. assuming a red marble was selected first, what is the probability that jon selected a red marble both times

2 months ago

## Solution 1

Guest #4334
2 months ago
Since there are 12 marbles in total, he takes only one of them.

4/12, and he gets a red one.

If he doesn't replace the first one, the next one would be 3/11. The probability that Jon selected a red marble both times is 1/11.

(I kind of forgot this lesson, but here's my guess.

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A normal distribution has a mean of 0.40 and standard deviation of 0.028. What percentage of observations will lie between 0.372 and 0.428?
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Solution:
To evaluate for P(0.372<x<0.428) we shall proceed as follows:
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brainly.com/question/29776206

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Your question is incomplete, most probably the complete question is:

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