Find the value of the test statistic W and the p-value. (Round your answer to four decimal places.)
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.
| Men | Women |
|---|---|
| 31.6 | 44.5 |
| 86.5 | 46.4 |
| 56.2 | 30.9 |
| 68.2 | 41.5 |
| 47.2 | 36.8 |
| 59.9 | 50.5 |
| 66.3 | 24.8 |
Ha: The two populations of salaries are identical
Ha: Median salary for men − Median salary for women = 0
Ha: The two populations of salaries are not identical.
Ha: Median salary for men − Median salary for women > 0
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