Agood use of z-scores is to compare values in two different distributions. suppose your instructor will drop the low test when computing final grades, but he curves grades on each test. you had a 92 on the first test, and an 85 on the second. the first test had a mean of 83 and standard deviation of 6. the second test had a mean of 75 and standard deviation 3. the test with the relatively better score is

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).