PLEASE HELP !! Huan wants to write a statistical question to collect data about the books her classmates read this month. Which of the following questions should she ask to get statistical variability?

A. Who is your favorite author?
B. How many books did you read this month?
C. What type of book do you like to read?
D. Did you read any nonfiction books this month?

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).