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Aleksandr [31]
3 years ago
8

A bag contains 5 red marbles 7 yellow marbles and 3 blue marbles what is the probability of not drawing one blue marble at rando

m from the bag?
Mathematics
2 answers:
hram777 [196]3 years ago
4 0

Answer:

You have a 0.8 / 80% of NOT picking the blue marbles.

Step-by-step explanation:

5 + 7 + 3 = 15

15 - 3 = 12

12 / 15 = 0.8 = 80%

Anton [14]3 years ago
4 0
Answer
It’s 0.8 or 80%
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Two samples each of size 25 are taken from independent populations assumed to be normally distributed with equal variances. the
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Pooled Combined Variance s_p=12.5

Test Statistic:

t=\frac{\left(\bar{X_1}-\bar{X_2}\right)}{s_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}

t=\frac{\left(35.5-33\right)}{12.5\sqrt{\frac{1}{25}+\frac{1}{25}}}

\left|t\right|=0.01414

Degrees of freedom = n_1+n_2-2=25+25-2=48

\alpha =0.05

t-Critical =t_{\alpha /2, n_1+n_2-2}=t_{0.025, 48}=-2.0206 \\Table value=|t|=2.0206\\|t|=2.0206

The table value is greater than the calculated value.

Thus we accept H0.

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3 years ago
3/8 = r + 2/3<br> what is R
Kruka [31]
-7/24, because you can just do this question in reverse to figure out an answer. (3/8 - 2/3)
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Step-by-step explanation:

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Hello...

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To solve for Width, we need to isolate it by getting 4.5 on the other side. To do this, we divide by 4.5 on both sides of the equals sign. this will give us W=8.5 or Width = 8 1/2 meters.

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3 years ago
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