Product Information for 10 Tablet Computers Cost ($) Operating System Display Size (inches) Battery Life (hours) CPU Tablet Manufacturer Acer Iconia W510 599 Windows 10.1 8.5 Intel Amazon Kindle Fire HD 299 Android 8.9 TI OMAP Apple iPad 4 499 ios iOS 9.7 11 Apple HP Envy X2 860 Windows 11.6 8 Intel Lenovo ThinkPad Tablet 668 Windows 10.1 10.5 Intel Microsoft Surface Pro 899 Windows 10.6 4 Intel Motorola Droid XYboard 530 Android 10.1 1 ΟΜΑΡ TI OMAP Samsung Ativ Smart PC 590 Windows 11.6 7 Intel Samsung Galaxy Tab 525 Android 10.1 10 Nvidia Sony Tablet S 360 Android 9.4 8 Nvidia a) What is the average cost for the tablets?
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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