Jarrid Medical, Inc., is developing a compact kidney dialysis machine, but its chief engineer, Mike Crowe, is having trouble controlling the variability of the rate at which fluid moves through the device. Medical standards require that the hourly flow be 4 liters, plus or minus 0.1 liter, 80 percent of the time. Mr. Crowe, in testing the proto
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.
Jarrid Medical, Inc., is developing a compact kidney dialysis machine, but its chief engineer,
Mike Crowe, is having trouble controlling the variability of the rate at which fluid moves
through the device. Medical standards require that the hourly flow be 4 liters, plus or minus
0.1 liter, 80 percent of the time. Mr. Crowe, in testing the prototype, has found that 68
percent of the time, the hourly flow is within 0.08 liter of 4.02 liters. Does the prototype satisfy
the medical standards?
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