help please I need it I dont get this question “charlie went to the grocery store to buy sugar for the batches of cookies that he is baking. He added up the sugar needed for the 4 batches and got the sum 6 1/2 cups. which expression can represent the addition Charlie did to find the total amount of sugar?”

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).