Engineers at an oil refinery find out how easily gasoline evaporates by measuring its vapor pressure. as they make gasoline, they need to determine whether its vapor pressure is high enough. the standard deviation of the vapor pressure of the gasoline made by the refinery is always 0.03 (pounds per square inch). which hypothesis test would be most appropriate for this task?
question options:
a. one sample z-test
b. one sample t-test
c. paired-samples t-test
d. two sample t-test

Write the rational number in lowest terms 99/-15

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

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).