PSYCH 2220 Lecture Notes - Lecture 18: Null Hypothesis, Effect Size, Confidence Interval
25 Apr 2018
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Regression equation: yhat = 2. 653 + 0. 171x(self esteem) + 0. 49x(diff temp) - 0. 79x(easy temp) Slope for self esteem interpretation: when self esteem score increases by 1 unit, maternal sensitivity is expected to increase by 0. 171 units, when controlling for difficult temperament and easy temperament. Largest influence: self esteem, beta = 0. 376. How much variability in maternal sensitivity is accounted for by the set of predictors? = Hypothesis test and why: paired-sample t test, one group of pps are participating in both. Iv = sleep condition, iv = math problems difficulty, dv = choosing types of math problems. Null hypothesis = there is no difference in problem choice between the students when they experience sleep loss and normal sleep. Descriptive statistic = pps in the sleep loss condition chose an average 23 point difficulty problems with a standard deviation of 11. Inferential statistic = getting less sleep leads to participants choosing less hard problems.
