The Acme Company manufactures widgets. The distribution of widget weights is approximately normal with a mean of 51 ounces and a standard deviation of 11 ounces. Use the Empirical Rule to answer the questions below. Sketch the distribution in order to answer these questions. 99.7 of the widget lies between ______ and _____ What percentage of the widget lies between 29 and 84 ounces? what percentage of the widget lies above 40
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 Acme Company manufactures widgets. The distribution of widget weights is approximately normal with a mean of 51 ounces and a standard deviation of 11 ounces.
Use the
99.7 of the widget lies between ______ and _____
What percentage of the widget lies between 29 and 84 ounces?
what percentage of the widget lies above 40
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