- #1
Goalie_Ca
- 102
- 0
Easy question but I'm being stupid somewhere. quite frustrating... enough to post it :surprise:
Basically the question is
Semiconductor wafer testing:
365 dies, 201 passed probing.
Assuming stable process calculate a 95% confidence interval for the proportion of all dies that pass the probe.
So x_bar = 201/365
std_dev = p*(1-p) = .228
n=356.
the answer in the book is .513,.615 and I'm not getting that. same for the next question and the one after lol.
Basically the question is
Semiconductor wafer testing:
365 dies, 201 passed probing.
Assuming stable process calculate a 95% confidence interval for the proportion of all dies that pass the probe.
So x_bar = 201/365
std_dev = p*(1-p) = .228
n=356.
the answer in the book is .513,.615 and I'm not getting that. same for the next question and the one after lol.