Here are the numbers of goals by the lead scorers of the New Jersey Devils hockey team in the 2007-08 and 2008-09 seasons. On average, did the Devils pay any differently in the 2008-09 seasons than they did in 2007-08? Evaluate the test statistic using a two-tailed test with ?=.05 Player 07-08 08-09 Elias 20 30 Zajac 14 20 Pandoifo 12 5 Langenbrunner 13 29 Gionfa 22 20 Parise 32 45
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.
Here are the numbers of goals by the lead scorers of the New Jersey Devils hockey team in the 2007-08 and 2008-09 seasons. On average, did the Devils pay any differently in the 2008-09 seasons than they did in 2007-08? Evaluate the test statistic using a two-tailed test with ?=.05
|
Player |
07-08 |
08-09 |
|
Elias |
20 |
30 |
|
Zajac |
14 |
20 |
|
Pandoifo |
12 |
5 |
|
Langenbrunner |
13 |
29 |
|
Gionfa |
22 |
20 |
|
Parise |
32 |
45 |
Step by step
Solved in 2 steps with 9 images
