Question

Suppose the number of corn kernels on an ear of corn is normally distributed. For a random sample of ears of corn, the confidence interval (858.50, 885.50) is generated. Find the error bound.

Answer 1

The error bound is of 13.5 corn kernels.

Explanation:

Any confidence interval has a lower bound and an upper bound. The error bound is the difference between the values of those two bounds, divided by 2.

In this problem, we have that:

Lower bound: 858.50

Upper bound: 885.50

Error bound: (885.50-858.50)/2 = 13.5

The error bound is of 13.5 corn kernels.