Suppose there is a 1.3 *F drop in temperature for every thousand feet that an airplane climbs into the sky. The temperature on the ground is - 2.8 *F.
(a.) Write a multiplication expression to represent the change in temperature
after the plane ascends 10,000 feet.
(b.) What will be the temperature when the plane reaches an altitude of 10,000 feet?

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).