Q and R are independent events. P(Q) = 0.5 ; P(Q AND R) = 0.4 . Find P(R).

Which of the following could be the graph of the equation y = -2x + 5

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

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).