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Mrrafil [7]
3 years ago
13

Plsss help (ZOOM TO SEE FULL PIC)

Mathematics
1 answer:
Serga [27]3 years ago
6 0

Answer:

350+280+553=1183

C

Step-by-step explanation:

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Suppose the mean of a normally distributed population is 300, and 200 simple random samples are drawn from the population. At
V125BC [204]

Answer:

the required number of samples to contain the population mean = 136

Step-by-step explanation:

From the Empirical rule, If a data is normally distributed, then about 68% of the population lies within one standard deviation from mean.

Now, if we suppose that the mean of a normally distributed population is 300, and 200 simple random samples are drawn from the population. i.e. μ = 300

And;

Number of simple random samples: n = 200

Thus, by implication, we would expect about 68% of 200 samples confidence intervals to contain the population mean .

Hence,

Required number of samples = 68% of 200

This gives ;

0.68 x 200 = 136

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3 years ago
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Answer:

1/4

Step-by-step explanation:

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The first side of a triangle is cm long. The second side is twice as long as the first.
KonstantinChe [14]

Answer:

First side is 19, second side is 38 and third side, the longest is 43.

Step-by-step explanation:

Let's call the first side a.  

The second side, being twice as long as the first, is 2a.

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The equation is:

a+2a+2a+5=100, since 1 metre is 100 centimetre.

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