Evaluate -(-x) for the given value of x.
-x = 
Definitions:
Critical Value
A point on the scale of the test statistic beyond which we reject the null hypothesis, used in hypothesis testing.
Regression Coefficients
Quantitative measures in statistical models representing the change in the dependent variable for a one-unit change in an independent variable, assuming all other variables are held constant.
F-test
A group of statistical tests that compare the variances among different sample groups to ascertain if they come from populations with equal variances.
Independent Variables
The variables that are manipulated or categorised to determine their effect on the dependent variable in an experiment.
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Q79: - <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8504/.jpg" alt="- A)
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