like to swim fast, but swimming c ty's swim team found a variance at a different university found th nificance) that the variances are e
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.
![In swimming, clearly you would like to swim fast, but swimming consistent times is also important. A survey of 26
swims by men on a local university's swim team found a variance of their swimming times was 7 seconds. A similar
survey of 21 swims by swimmers at a different university found the variance was 12 seconds. When testing the
hypothesis (at the 5% level of significance) that the variances are equal, what is the test statistic? (please round your
answer to 2 decimal places)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcc1abcb5-b580-4fef-be0b-359c8c8bc989%2Fdbc32dc6-78e6-4e57-b8ca-017fbd9c41d5%2Fj34ve4g_processed.jpeg&w=3840&q=75)
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