A group of researchers wants to see if being diagnosed with ADHD is associated with a higher level of depressive symptoms. The researchers recruit 20 participants who have been diagnosed with ADHD, and administer the Burn’s Depression Checklist to them, a test commonly used by mental health professionals to as-sess depressive symptoms. The average score among the participants was a 48, with a standard deviation of 6. The average score for the test across the U.S. is a 32 A). Calculate the test statistic, also what are the critical values?
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 group of researchers wants to see if being diagnosed with ADHD is associated with a higher level of depressive symptoms. The researchers recruit 20 participants who have been diagnosed with ADHD, and administer the Burn’s Depression Checklist to them, a test commonly used by mental health professionals to as-sess depressive symptoms. The average score among the participants was a 48, with a standard deviation of 6. The average score for the test across the U.S. is a 32
A). Calculate the test statistic, also what are the critical values?
B). Conclusion
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