Suppose an investment of 3800 doubles in value ever decade. the function f(x)=3800•2^x gives the value of the investment after x decades. how much is the investment worth after 2 decades?
a. 152000
b.15200
c.76000
d.7600

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).