The table below gives the results from a study of the number of words spoken in a day by men and women: Men Women Mean: 15568 16215 Standard Deviation: 8632 7301 Number in Sample: 186 210 Which test would be used test the hypothesis than men speak less words per day than women? a. 2- Sample T Test b. T- Test c. 1- Prop Z Test d. 2- Prop Z 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.
The table below gives the results from a study of the number of words spoken in a day by men and women:
Men Women
Mean: 15568 16215
Standard Deviation: 8632 7301
Number in Sample: 186 210
Which test would be used test the hypothesis than men speak less words per day than women?
| a. |
2- Sample T Test |
|
| b. |
T- Test |
|
| c. |
1- Prop Z Test |
|
| d. |
2- Prop Z Test |
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