Circuit Boards II Refer to the Exercise. Suppose 10 samples of n = 400 printed circuit boards were tested and a confidence interval was constructed for p for each of the ten samples. What is the...

Circuit Boards II
Refer to the Exercise. Suppose 10 samples of n = 400 printed circuit boards were tested and a confidence interval was constructed for p for each of the ten samples. What is the probability that exactly one of the intervals will not contain the true value of p? That at least one interval will not contain the true value of p?

Exercise:

Circuit Boards
Samples of 400 printed circuit boards were selected from each of two production lines A and B. Line A produced 40 defectives, and line B produced 80 defectives. Estimate the difference in the actual fractions of defectives for the two lines with a confidence coefficient of .90.