What value of x is two standard deviation to the right of the mean if X ~ N(10, 1)? O 1 O 2 O 4 0 6 O 8 O 10 O 12

answer B C D E

@ 2 5. Using the following data set: 2,7,9, 1, 3, 5 Find the mean, standard deviation, and the standard error. (You are now combining lectures 3, 4, and 7.) F2 W S #3 80 F3 E D $ † 4 Q F4 R FL % 5 112 0 T G ^ 6 MacBook Air F6 Y H & 7 FEB 27 N F7 U * 8 ∞ J D F

i was wondering if i could get help with questions a and b

For a population with mean of 50 and standard deviation of 8, what is the z- score that corresponds to X=44? а. -2 b. 1.5 С. 1 d. -0.5 e. -0.75

For any variable X, if: the standard deviation = and the variance = Var(X) Which of the following statement is true: Select one: a. SD < Var(X) O b. (SD)² = Var(X) (SD) C. SD = [var(x)]²