Twenty-five fast-food restaurant hourly employees were surveyed to see how many hours they worked per week, on average. The following data was obtained: 43, 47, 44, 39, 38, 37, 43, 41, 36, 42, 42, 38, 32, 46, 42, 40, 44, 32, 36, 37, 38, 42, 36, 36, 42 Assuming the population standard deviation is o mean number of hours per week that the population of fast-food restaurant employees work. 5, construct a 98% confidence interval for th
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.
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