Answer:
DF = 458
Step-by-step explanation:
In statistics, T-test have an extensive application. T-tests are used in hypothesis testing or inference about the population mean when the population standard deviation is not known. Nevertheless, they are used in making inference in paired samples or dependent samples t-test as well as independent samples.
The degrees of freedom, DF, is a characteristic of the student's t distribution which is used in T-tests. In a simple T-test;
DF = n - 1
where n is the sample size
Given n is 459, DF = 459 - 1 = 458
Therefore, DF = 458
Answer:
yes I think 6 is a solution to the equation
Simplify both sides if needed. The left-hand side needs simplification.
4(x - 6)
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-2x + 6
4x - 24
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-2x + 6
All is left to do is add and subtract to get the x variable all alone.
4x - 24
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-2x + 6
6x - 24
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6 <-- Add 2x to both sides
6x
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30 <-- Add 24 to both sides
x
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5 <-- Divide both sides by 6
In order to be in the solution set, x has to be less than or equal to 5.
In interval notation: [5, -∞)
Parallel lines have the same slope. So if a line has a slope of 2, a line parallel to it also has a slope of 2.