Okay, so... This one teacher has been bumping my grade down all semester, but she hasnt put any grades in AT ALL..
It was just an 86 yesterday.. and she moved it to a 56 today. Without putting any grades in!

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).

Afair die is cast four times. calculate the probability of obtaining exactly two 6's round to the nearest tenth of a percent

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6