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A test of spelling ability is given to a random sample of 10 students before and after they completed a spelling course.The mean score before the course was 119.60 and after the course the mean score was 130.80.The standard deviation of the difference was 16.061.Calculate the test statistic to test the claim.
Random Events
Outcomes or occurrences that are unpredictable and determined entirely by chance.
Probability
The measure of the likelihood that an event will occur, quantified as a number between 0 and 1, with 1 indicating certainty.
Tree Diagram
A diagram used to show the total number of possible outcomes in a probability experiment.
Simple Events
A simple event is an outcome or event that cannot be further broken down into simpler components within the context of a probability experiment.
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