Dep.Variable:__ Is it the Hypothesis one-tailed or two-tailed?__ Proper t-test statistic:__ Why? _ State Hypotheses mathematically: H0:__ H1:__ State Hypotheses in words. H0: __ H1: __ Check your assumptions and perform the proper t-test
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.
. Do patients with gastrointestinal issues experience more psychological distress than the general population?
The DASS-21 questionnaire is a validated measure of depression, anxiety, and stress. For the general population, the mean for anxiety is µ = 4.2. Anxiety levels are calculated based on self-reported answers to questions on a scale from 0 through 42, with lower scores indicating lower anxiety.
Participants with gastrointestinal issues (specifically inflammatory bowel disease, IBD) completed the DASS-21. Use the data presented below to determine whether having gastrointestinal issues like IBD significantly increases risk for anxiety. Test whether or not the performance of this sample is significantly higher than the normal population using the proper t-test. Here are the data:
Anxiety scores: 12, 15, 10, 8, 10, 5, 10, 13, 4, 6
ANALYSES AND UNGRADED OPTIONAL GUIDING QUESTIONS:
1a. Identify the Indep.Variable:__
- Dep.Variable:__
- Is it the Hypothesis one-tailed or two-tailed?__
- Proper t-test statistic:__ Why? _
- State Hypotheses mathematically: H0:__ H1:__
State Hypotheses in words.
H0: __
H1: __
- Check your assumptions and perform the proper t-test using JASP, copy/paste or screenshot the results table and Descriptives plot into the appendix (this will go at the end of your report that you turn in).
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