At a computer manufacturing company,the actual size of computer chips is normally distributed with a mean of 1 cm and a standard deviation of 0.1 cm.A random sample of 12 computer chips is taken.What is the standard error for the sample mean?
A) 0.029
B) 0.120
C) 0.091
D) 0.050

Question

Quizplus · Accepted Answer

The standard error of the sample mean is calculated using the formula: SE = σ / √n, where σ is the population standard deviation and n is the sample size. Here, σ = 0.1 cm and n = 12. Thus, SE = 0.1 / √12 ≈ 0.029 cm.

At a Computer Manufacturing Company,the Actual Size of Computer Chips