Match these terms from a. Sample recruitment in which every member of the target Section 2.3 and Chapters population has an equal chance of being selected. 3-5 with their definitions. b. The hypothesis that predicts that there is no effect or difference. Alternate hypothesis c. The hypothesis that predicts an effect or difference. Directional hypothesis d. When the probability of an outcome being by chance is less than Law of large numbers the specified alpha level, usually .05 or 5%. e. The mathematical principle that larger sample sizes will decrease Null hypothesis the amount of error. Percentile f. A value below which a specified percentage of the scores in a Random selection distribution occur. g. A score within the standard normal distribution. Skew h. An alternate hypothesis that predicts a difference in one tail of the Statistical significance distribution. Type I error i. A descriptor of how much and in what way a data distribution lacks symmetry. z-score j. When the null hypothesis is rejected but it is actually true