An attendant collected 77 coins from a parking meter. the value of the coins was $9.15, and there were six more dimes than quarters. which system models this situation? assume the coins are nickels(n), dimes (d), and quarters (q). a. {n + d + q = 77 {5n + 10d + 25q = 9.15 {d + q = 6 b. {n + d + q = 915 {5n + 10d + 25q =9.15 {d - q = 6 c. {n + d + q = 77 {0.05n + 0.10d + 0.25q = 9.15 {d - q = 6 d. {n + d + q = 915 {0.05n + 0.10d + 0.25q = 77 {d + q = 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).