Question Doreen bought a dress priced at $89 and a skirt priced at $36. She paid a total of $135 for the dress and the
skirt, including sales tax. What was the sales tax rate?

A) 6%
B) 7%
C) 8%
D) 9%

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).