I need with this help pls
1 answer:
Answer:
y=(x-2)(x+2)
Step-by-step explanation:
The table and graph show the line crossing the x axis at -2 and +2. That means when x is either of those two values, y will be 0.
If we set each equation to zero, we should find those two values of x. I'll skip right to the second equation, since I can see that it would meet those criteria:
y=(x-2)(x+2)
0=(x-2)(x+2)
x = 2 and x = -2
See attachment.
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Answer:
Null hypothesis:
Alternative hypothesis:
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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:
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:
Alternative hypothesis:
The statistic to check the hypothesis is given by:
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:
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