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Romashka [77]
3 years ago
5

if a marble is randomly chosen from a bag that contains exactly8 red marbles , 6 blue marbles, and 6 white marbles,what is the p

robability that the marble will NOT be white
Mathematics
1 answer:
Nikolay [14]3 years ago
7 0
It is simply the ratio of Non-white marbles to Total marbles.

----> 14/20 = 7/10
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Answer:

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We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

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Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

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Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

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M = 2.575*\frac{1.27}{\sqrt{85}}

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