Hi :), im really struggling with this. Just wanted to know if anyone can explain step by step for me please. Id really appreciate it.

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).

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse