Show the work change the denominator 1/10 plus 2/5

Closing a credit card usually _your debt ratio.a. increasesb. decreasesc. improvesd. has no effect on

X+ y = 5 ; x - y =3 solve using linear combination

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).