In a normally distributed sample, 95% of people's heights are between 168 and 184 centimeters. what is the standard deviation of the sample? A. 2
B. [tex]2\sqrt{2[
C. 4
D. 8

Which expression is equivalent to the expression below? (6c^2 + 3c) / (-4c + 2) / (2c + 1) / (4c - 1)a. 3c(2c-1) / (2c + 1)b. -3c(2c-1)^2 / (2c + 1)^2c. 3cd. -3c(just took the test its d. -3c)

What is the approximate circumference of the circle shown below?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?