Consider Figure 29.21. The two tail-ends have equal area. How many standard deviations from the mean must A and B be placed if the tail-ends are (а) 10% (b) 5% (c) 1% of the total area? N(x) A A В Figure 29.21 Graph for Question 7.
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.
![Consider Figure 29.21. The two tail-ends have equal
area. How many standard deviations from the mean
must A and B be placed if the tail-ends are
(а) 10%
(b) 5%
(c) 1%
of the total area?
N(x) A
A
В
Figure 29.21
Graph for Question 7.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fef512be5-c857-4727-8c5b-aa286a4376b6%2F33463609-ac5c-4659-9ac1-a79d760b53dc%2Fcs670qc_processed.jpeg&w=3840&q=75)
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