PSYC 204 Lecture Notes - Lecture 15: Dfs Furniture, Null Hypothesis, Type I And Type Ii Errors
Document Summary
Topic 8 = hypothesis testing for one sample mean. *if reject null hypothesis = accept alternative hypothesis & vice-versa so mutually exclusive. Inferential statistics = used to: draw conclusions about population, compare 2 or more populations, use sample data to estimate. Samples provide point estimates [sample mean] of population mean parameters. X = but population mean is unknown so. X = but population sd is unknown. X standard error usually estimated by sx = . *always related to sample means not individual data in sample. Inferential statistics on sample mean because normal distribution. Provide statement that a certain equality is true in the population. Mcgill iq x = 100 & population iq = 100 so difference = 0. Obtain sample mean x & compare to population to determine how. Probable for sample x to come from specific population with : determine probability. Determine probability of obtaining the data given the original statement.
