Historians are interested in the accuracy of eyewitness accounts of traumatic events. One study examined survivors' recall of the sinking of the ship Titanic (Riniolo, Koledin,Draku;ic & Payne, 2003). The researchers reviewed the transcripts of survivors testimony at governmental hearings (www.titanicinquiry.org), to see whether they testified that the ship was intact or breaking apart during the ships final plunge (it was in fact breaking apart). To test for eyewitness accuracy, testimony of 20 survivors was examined to see if there was an equal likelihood of survivors saying the ship was intact or breaking apart. Test assumptions and make a decision (please provide written evidence to support your descision) Inferential statistic(s) and p-value(s) Decision Conlcusion Based on your descision, identify and explain the type of error you could be making with respect to the conclusions of the study
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.
Historians are interested in the accuracy of eyewitness accounts of traumatic
Test assumptions and make a decision (please provide written evidence to support your descision)
Decision
Conlcusion
Based on your descision, identify and explain the type of error you could be making with respect to the conclusions of the study
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