Help, what is the simplified form of. 4pi square root 5 - 2pi square root 5 over 3 square root 5. A, 2pi over 3
B, 3pi over square root 5
C, 2pi over square root 10
D, 2pi over 3 square root 5

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).