Justin and TJ are servers at a local restaurant. The table below shows the tips they earned. Justin $32 $45 T.J. Tips Monday Tuesday Wednesday Thursday Friday Which student has a higher mean tip for the week and by how much? $58 $48 $40 $42 $42 $50 $33 $50 O a) Justin's mean tip is $4 more than TJ's mean tip. O b) Justin's mean tip is $3 more than TJ's mean tip. O9 TJ's mean tip is $3 more than Justin's mean tip. O a) TJ's mean tip is $4 more than Justin's mean tip.
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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