A fair six-sided die, with sides numbered 1 through 6, will be rolled a total of 15 times. Let x¯1 x ¯ 1 represent the average of the first ten rolls, and let x¯2 x ¯ 2 represent the average of the remaining five rolls. What is the mean μ(x¯1−x¯2) μ ( x ¯ 1 − x ¯ 2 ) of the sampling distribution of the difference in sample means x¯1−x¯2 x ¯ 1 − x ¯ 2 ?

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

Solving systems of linear equations: tables represent two linear functions in a systemöwhat is the solution to this system? 0 (10)0 (1.6)0 18,26)0 18-22)

Which of the following is not a subset of {1,2,3}?