A random sample of 13 CBC students was taken and administrators wanted to look at the number of credits each student enrolled in during their first quarter at the college. The results are
given (in number of credits):
7, 10, 10, 12, 12, 12, 15, 15, 15, 15, 15, 17, 20
Calculate the sample standard deviation for number of credits that the 13 selected students
were enrolled in. Round to the nearest tenth. Enter your answer without units.

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)