The interior angles next to the 2h angles are congruent and each one measures 70 degrees. Since the interior angle is 70 degrees the exterior angle is 110 degrees. 2h = 110 divide both sides by 2 h = 55
The test statistic <span>is
a value used in making a decision about the null hypothesis and is
found by converting the sample statistic to a score with the assumption
that the null hypothesis is true.
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Internal Validity is high in an experiment. when it demonstrates persuasively that changes in behavior are caused by the independent variable and not by unknown factors.
What is Internal Validity?
Internal validity is defined as the degree to which the observed results represent the truth in the population under investigation and are not the consequence of methodological flaws.
Internal validity is the degree of certainty that the causal link being examined is reliable and unaffected by other factors or variables.
The extent to which study results may be extended (generalized) to other contexts, groups, or events is referred to as external validity.