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2 years ago

No links please!!!!!!!!!!!!!

Mathematics

2 answers:

Trava [24]2 years ago

4 0

X< -6 __________________

aleksley [76]2 years ago

4 0

Answer:

Step-by-step explanation:

$2 < -\frac{x}{3}$

To "undo" the division, multiply both sides of the inequality by 3.

$6$

To find x, multiply both sides by -1, remembering that when you multiply (or divide) an inequality by a <u>negative</u> number, you have to switch the direction of the inequality sign (to avoid not telling the truth!!!).

$-6>x$

Finally, it's a good idea to write the solution so the subject of the math sentence is x, not -6.

$x$

This isn't some kind of magic. If -6 is bigger than x, then x is smaller than -6.

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In a simple regression analysis for a given data set, if the null hypothesis β = 0 is rejected, then the null hypothesis ρ = 0 i

kati45 [8]

Answer:

Null hypothesis: $\rho =0$

Alternative hypothesis: $\rho \neq 0$

The statistic to check the hypothesis is given by:

$t=\frac{r \sqrt{n-2}}{\sqrt{1-r^2}}$

And is distributed with n-2 degrees of freedom

And the statistic to check the significance of a coeffcient in a regression is given by:

$t_1 = \frac{\hat{\beta_1} -0}{S.E (\hat{\beta_1})}$

For this case is importantto remember that t1 and p value for test of slope coefficient is the same test statistic and p value for the correlation test so then the answer would be:

Always

Step-by-step explanation:

In order to test the hypothesis if the correlation coefficient it's significant we have the following hypothesis:

Null hypothesis: $\rho =0$

Alternative hypothesis: $\rho \neq 0$

The statistic to check the hypothesis is given by:

$t=\frac{r \sqrt{n-2}}{\sqrt{1-r^2}}$

And is distributed with n-2 degrees of freedom

And the statistic to check the significance of a coeffcient in a regression is given by:

$t_1 = \frac{\hat{\beta_1} -0}{S.E (\hat{\beta_1})}$

For this case is importantto remember that t1 and p value for test of slope coefficient is the same test statistic and p value for the correlation test so then the answer would be:

Always

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3 years ago

Given: ∠BCD ≅ ∠EDC and ∠BDC ≅ ∠ECD Prove: Δ BCD ≅ Δ EDC

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It would be bisecting angles

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3 years ago

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alexira [117]

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