In the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect call on the field. Thên, based upon analysis, the call is either overturned (because the referees were incorrect) or upheld (referees were correct). In the first eight weeks of last NFL season, there were 316 challenges made, with 154 of those calls overturned. The NFL team owners used this data to begin a lawsuit that claimed referees were wrong more than 50% of the time in challenged situations. They want to perform statistical analysis before filing that lawsuit. For the following question, select the answer which correctly responds. Using the analysis presented in previous questions about this claim, is the NFL owners' complaint merited? That is, should they proceed in filing the lawsuit? O Yes O No

In the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect call on the field. Thên, based upon analysis, the call is either overturned (because the referees were incorrect) or upheld (referees were correct). In the first eight weeks of last NFL season, there were 316 challenges made, with 154 of those calls overturned. The NFL team owners used this data to begin a lawsuit that claimed referees were wrong more than 50% of the time in challenged situations. They want to perform statistical analysis before filing that lawsuit. For the following question, select the answer which correctly responds. Using the analysis presented in previous questions about this claim, is the NFL owners' complaint merited? That is, should they proceed in filing the lawsuit? O Yes O No

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Concept explainers

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.

Topic Video

Question

In the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect call on the field. Then, based upon further
analysis, the call is either overturned (because the referees were incorrect) or upheld (referees were correct). In the first eight weeks of last
NFL season, there were 316 challenges made, with 154 of those calls overturned.
The NFL team owners used this data to begin a lawsuit that claimed referees were wrong more than 50% of the time in challenged
situations. They want to perform statistical analysis before filing that lawsuit.
For the following question, select the answer which correctly responds.
Using the analysis presented in previous questions about this claim, is the NFL owners' complaint merited? That is, should they proceed in filing the
lawsuit?
O Yes
O No

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