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mezya [45]
3 years ago
7

How is the relationship between the regression line and the actual data point?

Mathematics
1 answer:
lapo4ka [179]3 years ago
7 0

Answer:

Regression lines can be used to predict values within the given set of data, but should not be used to make predictions for values outside the set of data. The correlation coefficient r measures the strength of the linear association between x and y.

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PLEASE HELP !!!!!
Anastaziya [24]

Answer:

  -10%

Step-by-step explanation:

  price elasticity of demand = % change in demand / % change in price

Here, the "price" changes from 15 to 45, so its percent change is ...

  ((new value)/(old value) -1) × 100%

  = (45/15 -1) × 100%

  = 200%

The % change in demand is given as -20%, so the price elasticity is ...

  price elasticity of demand = (-20%)/(200%) = -0.10 = -10%

8 0
3 years ago
Solve the problem. A musician plans to perform 8 selections. In how many ways can she arrange the musical selections?
raketka [301]

Answer:

40,320

Step-by-step explanation:

The number of ways she can arrange the musical seletions is as follows

n! ( where n is given as 8) = 8! = 8 X 7 X 6 X 5 X 4 X 3 X 2 X 1 = 40,320

7 0
4 years ago
A poll conducted in 2013 found that 52% of u.s. adult twitter users get at least some news on twitter.40. the standard error for
FinnZ [79.3K]
The 99% confidence interval for the population proportion is given by

sample \ proportion \pm 2.575\times standard \ error

Given that 52% = 0.52 is the standard proportion and the standard error is 2.4% = 0.024.

Therefore, the <span>99% confidence interval for the fraction of u.s. adult twitter users who get some news on twitter is given by

0.52\pm2.575\times0.024=0.52\pm0.0618=(0.4582, \ 0.5818)

</span>Therefore, the <span>99% confidence interval for the fraction of u.s. adult twitter users who get some news on twitter is 45.82% and 58.18%.

The interpretation of the confidence interval</span> is as follows: "We are 99% confident that the fraction of U.S. adult twiter users who get some news on twitter is between 45.82% and 58.18%.
3 0
4 years ago
999% is 2345 of what number?<br> Willing to give 5 stars, a thanks, and a brainliest (probably)
DochEvi [55]

Answer:

4.26

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please help.<br> 25 for correct.
QveST [7]

Answer:

3.4in

Step-by-step explanation:

6 0
3 years ago
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