Question: 1) What is the purpose of calculating a test statistic? How does this value describe how the sample data either supports or contradicts a claim?

1) What is the purpose of calculating a test statistic? How does this value describe how the sample data either supports or contradicts a claim?
2) How does one decide between using a one-tailed or a two-tailed hypothesis test? Is there an advantage to using one over the other?

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1 A test statistic is a standardized value that is calculated from staple data during a hypothesis tea You can use test statistics to determine whethe... View full answer

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