Please help me with this. answer all of these please

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).

Geometry ! complete the following proof. given: qk=16, pk=26, mk=65, kl=40 prove: ∆qpk~∆lmk

You leave a $4 tip on a $24 bill at a resturaunt. to the nearest percent gratuity did you pay