Find the Percentiles for the Following: the Mean Score on a Test

question 78

Short Answer

Find the percentiles for the following: the mean score on a test of psychopathy among a group of incarcerated inmates is 50, with a standard deviation of 10. Assume a normal distribution, and find the Percentile for the following psychopathy scores:
-55

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Definitions:

Significance Level

A threshold in hypothesis testing that determines whether an observed effect is statistically significant, commonly denoted by alpha (α).

Obtained Value

The genuine result or value obtained by conducting a statistical test or experiment.

P Value

A statistical measure that helps scientists determine the significance of their research results, indicating the probability of obtaining an effect at least as extreme as the one in your sample data if the null hypothesis were true.

T Value

In hypothesis testing, it is the calculated value used to compare against a critical value to decide whether to reject the null hypothesis.