STAT 1400 Lecture Notes - Lecture 6: Cherry Tomato, Null Hypothesis, Statistical Parameter
Document Summary
Someone makes a claim about the unknown value of a population parameter. There are only two possible conclusions for any hypothesis test: there is sufficient evidence to reject the null hypothesis in favor of the alternative, there is insufficient evidence to reject the null hypothesis in favor of the. One-sides vs. two-sided alternatives: a two-tailed or two-sided alternative is symmetric, ha: [a specific value or another parameter] A one-tailed or one-sided alternative is asymmetric and specific: ha: < [a specific value or another parameter] 9:30 am: ha: > [a specific value or another parameter] Or: what determines the choice of a one-sided versus two-sided test is the question we are asking and what we know about the problem before performing the test. If the question or problem is asymmetric, then ha should be one-sided. If not, ha should be two-sided: we draw a random sample of size n from an n( , ) population.
