Random samples of size 81 are drawn from a population with mean 188.1 and standard deviation 11.4. Find the mean and the standard deviation of the sample mean. Round to four decimal places.
Mean = 1
Standard Deviation

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

Brent wants to know what is 5 x 1/2

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.