Boston (Sample 1) Midwest (Sample 2) South (Sample 3) 3 11 11 3 Sample size 5 4 Sample mean 3.60 6.67 7.75 Sample variance 5.8 7.10 6.25
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.
2. A national car rental agency is interested in determining whether the
-Attached is the image with the following data.
Step 1 - State the Hypothesis
Step 2 - Decide on alpha
Step 3 - Calculate the Test Statistic
Step 4 - Find the Critical Value
Step 5 - Conclusion
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