Assignment:
Use the pooled-variances t-test of Chapter in comparing the sample means for the data of Exercise. Is the conclusion consistent with the one reached in that exercise? Explain.
Students in a large section of a biology class have been randomly assigned to one of two graduate students for the laboratory portion of the class. A random sample of final examination scores has been selected from students supervised by each graduate student, with the following results.
Grad student A 78 78 71 89 80 93 73 76
Grad student B 74 81 65 73 80 63 71 64 50 80
a. What are the null and alternative hypotheses for this test?
b. Use ANOVA and the 0.01 level of significance in testing the null hypothesis identified in part (a).
Provide complete and step by step solution for the question and show calculations and use formulas.