Show the working please: The board of examiners that administers the real estate broker’s examination in a certain state found that the mean score of the test was 435 and the standard deviation was 72. Assume that the scores are normally distributed. a. If the board wants to set the passing score so that only the best 30% of all applicants pass, what is the passing score? b. What are the minimum and maximum scores of the middle 75% of persons that take the exam?
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.
Show the working please:
The board of examiners that administers the real estate broker’s examination in a certain state found that the mean score of the test was 435 and the standard deviation was 72. Assume that the scores are
a. If the board wants to set the passing score so that only the best 30% of all applicants pass, what is the passing score?
b. What are the minimum and maximum scores of the middle 75% of persons that take the exam?
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