Please help A population has a standard deviation of 11. What is the approximate standard error of the mean for a sample size of 150? A. 0.07
B. 2.70
O C. 1.80
OD. 0.90

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days