Okay so how do you find out what to multiply ratios when scaling up for instance 12/4

What is the length of bc ? enter your answer in the box.bc =

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

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).