In a boat race Arianas team rode their boat from point a to point B and back to .8 points ANB ride 30 miles apart during the race there was a constant current flowing from a to B they took two hours to travel from a to B and 2.5 hours to travel from be to add calculate the average speed of the boat from a to B and the average speed from better. Find the speed of the boat from A to B if there was no current. Find the speed of the current

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).