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### 11 Cards in this Set

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 tobt indicates the location of sample on the sampling distribution of means we sampling from a raw score population. tcrit critical value that marks the region of rejection df for a one-sample t-test df = N-1 confidence interval describes a range of mews, any one of which the sample mean is likely to represent. Confidence that the interval contains the mew equals (1-alpha) (100) degrees of freedom number of scores that are free to vary estimated standard error of the mean an estimate of the standard deviation of the sampling distribution of means, used in calculating the one-sample t-test; symbolized by sXw interval estimation A way to estimate a population pa­ram­eter by describing an interval within which the population parameter is expected to fall one-sample t-test The parametric procedure used to test the null hypothesis for a one-sample experiment when the standard deviation of the raw score population must be estimated point estimation A way to estimate a population parameter by describing a point on the variable at which the population parameter is expected to fall t-distribution The sampling distribution of all possible values of t that occur when samples of a particular size are selected from the raw score population described by the null hypothesis What are the assumptions of the t-test? 1) There is a one-sample experiment using INTERVAL or RATIO scores. 2) The raw score population forms a NORMAL DISTRIBUTION 3) The variability of the raw score population is estimated from the sample.