10.68 A randomized block design yielded the ANOVA table shown here: Source Treatments Blocks Ho df SS MS F Error 428 501 125.25 9.109 225 112.50 8.182 110 13.75 1 Total 14 836 a. How many blocks and treatments were used in this experiment? b. How many observations were observations were collected in the experiment? c. Specify the null and alternative hypotheses you would use to compare the treatment means. d. What test statistic should be used to conduct the hy- pothesis test of part c? e. Specify the rejection region for the test of parts c and d. Use a = .01. f. Conduct the test of parts c-e, and state the proper con- clusion. g. What assumptions are necessary to ensure the validity of the test you conducted in part f?