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dusya [7]
3 years ago
5

20. What do you think would happen to the variability (standard deviation) of the distribution of sample proportions if the samp

le size for each sample was 200 instead of 80? Explain.
Mathematics
1 answer:
Naya [18.7K]3 years ago
4 0

Answer:

Step-by-step explanation:

Sample proportion p is the proportion of favourable numbers to total number in the sample

By central limit theorem and also approximation of binomial to normal , we have sample proportion for large number of samples will be normal

with mean = sample proportion

and std deviation = \sqrt{\frac{pq}{n} }

Thus we find standard deviation of proportion sample is inversely proportional to the square of the sample size n.

It follows automatically that as sample size increases std deviation decreases.

Here from 80 sample size was made to 200

So std deviation would decrease automatically

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On the number line what are all the numbers absolute value if 1.5
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Answer:

I think it's between +1 and +2

Step-by-step explanation:

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3 years ago
Which value for x makes the following number sentence true? 12x = 6x + 24
denis23 [38]
To solve this, first subtract 6x from both sides.

That is because there cannot be the same variable on both sides of the equation. The new equation would be:

6x=24

Now divide by both sides of the equation by 6

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Hope this helped! Tell me if you have any more questions!
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3 years ago
Sabrina read a total of 175 pages in 3 days. On the first day she read 45 pages. On the second and third days, she read the same
Artemon [7]

Answer: Sabrina read 65 pages on the second and third days

Step-by-step explanation:

45 + 2x = 175

45 - 45 + 2x = 175 -45

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3 years ago
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Helga [31]

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8 0
2 years ago
PLLLLLLEAASSSSSSE HHHEEELLLPP AAAASSAPP
NeTakaya

Answer:

<em>The true statements are:</em>

<em>*The median weight for shelter A is greater than shelter B.</em>

<em>*The (IQR) interquartile range of shelter A is greater than the (IQR) interquartile range of shelter B.</em>

Step-by-step explanation:

<em>(for shelter A)</em>

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highest value: 30

lower quartile: 17

upper quartile: 28

(IQR) interquartile range: 28 - 17 = 11

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<em>(for shelter B)</em>

median: 18

lowest value: 10

highest value: 28

lower quartile: 16

upper quartile: 20

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3 years ago
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