The change in water vapor in a cloud is modeled by a polynomial function, c(x). describe how to find the x-intercepts of c(x) and how to construct a rough graph of c(x) so that the meteorologist can predict when there will be no change in the water vapor. you may create a sample polynomial of degree 3 or higher to use in your explanations.

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).