STATS 250 Midterm: 350 W09 Exam 2 Review Questions
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Statistics 350 exam 2 review - winter 2009: the neo-pr personality inventory is a test designed to measure various aspects of adult personality, one such aspect is agreeableness. Suppose these psychology majors can be considered a random sample of all psychology majors. Show all work: an experiment is conducted to compare a new drug x to placebo. For the measured response, higher values imply a better response. The following hypotheses were to be tested at the 10% significance level: H0: the population mean response for drug x is equal to that of placebo ( 1 = 2) Comparing the two boxplots (one for each group) side-by-side shows similar ranges and iqrs. 0. 10: the test statistic for testing the above hypotheses is 2. 34 and the corresponding p-value is 0. 013. Since the p-value < 0. 10, we reject h0. The probability that the population mean response for drug x is equal to that of placebo is 0. 013.