A group of women suffering from various types of fears is given a therapeutic course to learn how to handle their fear, Before the beginning of the course they were asked to answer a questionnaire to measure their ear score. At the end of the course the women answer the questionnaire again as a follow up measure. The fear scores are used to produce the following df Standard deviation Mean Pair 1(before - follow up) 24 2.853 4.417 2.520 1. How much lower on average did women score on the fear questionnaire after the course [Hint : l 4.4170 2.5200 3.520 4.520 None of theset 7i. What is the sample size No enough information 250 2010
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 women suffering from various types of fears is given a therapeutic course to learn how to handle
their fear, Before the beginning of the course they were asked to answer a questionnaire to measure their
fear score. At the end of the course the women answer the questionnaire again as a follow up measure, The
fear scores are used to produce the following
df
Standard deviation Mean
Pair 1(before- follow up)
24 2.853
4.417 2.520
1. How much lower on average did women score on the fear questionnaire after the course [Hint:7]
4.4170
2.5200
3.520
4.5200
None of these
2. What is the sample size
No enough information
25C)
200
30:1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd4aa45a2-f6f4-4370-98db-658ad69ac246%2F8e7b8355-8603-4b53-a193-7555b61ab2e0%2F9mma6mo_processed.jpeg&w=3840&q=75)
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