What Proportion of a Normal Distribution Is Located in the Tail

question 73

Multiple Choice

What proportion of a normal distribution is located in the tail beyond z = -1.00?​

• A)​0.8413
• B)​0.1587
• C)​-0.3413
• D)​-0.1587

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Definitions:

Alpha

A predetermined threshold in hypothesis testing that defines the probability of making a Type I Error, usually set at 0.05, indicating a 5% risk of false positive.

Null Hypothesis

A hypothesis that suggests there is no significant difference or effect, serving as a default position until evidence suggests otherwise.

Statistical Significance

A determination that a relationship between variables or a difference between groups is likely not due to chance, based on a predetermined threshold.

Reject

In the context of statistical hypothesis testing, to conclude that the evidence is sufficiently strong to discard the null hypothesis.