Statistics

Q2. An automotive part must be machined to close tolerances to be acceptable to customers. Production specifications call for a maximum variance in the lengths of the parts of .0035. Suppose the sample variance for 20 parts turns out to be s' = 0.005. Use a = 0.1 to test whether the population variance specification is being violated. (A). What is the test statistic value? (6 points) (B). What is the critical value? (6 points) (C) Using the critical value approach, which statement is true? [Multiple choice question (single answer)] (6 points) (a) Because p-value > 0.1, we do not reject Ho. (b) Because p-value 90.1, we reject Ho. (c) Because critical value > 28.3432, we do not reject HO. (d) Because critical value > 27.1429, we do not reject Ho. (e) Because 27.204 > critical value, we reject Ho. (f) None of the above