Solve. -7x + 7y + Z = 1 X + 8y

question 79

Multiple Choice

Solve.
-7x + 7y + z = 1 x + 8y + 8z = 8
9x + y + 9z = 9

• A) (1, -1, 1)
• B) (0, 0, 1)
• C) (0, 1, 0)
• D) (-1, 1, 1)

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Definitions:

Level of Significance

The probability of rejecting the null hypothesis when it is actually true, used as a criterion for deciding the outcome of a statistical test.

T-statistic

A type of statistic used in hypothesis testing, particularly in situations dealing with small sample sizes or unknown standard deviations, to determine if there is a significant difference between two sets of data.

Null

Often refers to a value of zero in various contexts, such as null pointers in programming or null hypotheses in statistics.

Alpha

A threshold level used in statistics to determine the significance of results, often set at 0.05 or 5%.