A clinical psychologist wants to determine whether his adolescent inpatients were elevated in terms of conduct disorder (CD). A sample of 25 was evaluated using a standard measure of CD; they had a sample mean score of 57. The population mean (µ) for the CD scale is 50 with a standard deviation (σ) of 10. Using an alpha level of .05
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
A clinical psychologist wants to determine whether his adolescent inpatients were elevated in terms of conduct disorder (CD). A sample of 25 was evaluated using a standard measure of CD; they had a sample
Given
Population mean μ=50
Population standard deviation σ=10
sample size n=25
sample mean X__=57
Here a hypothesis test is performed to test A clinical psychologist wants to determine whether his adolescent inpatients were elevated in terms of conduct disorder.
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