View Single Post
Agent_J
#1
Apr5-06, 12:20 AM
P: 13
What is the value of za/2 for an 85% confidence interval?

What I did was 1-0.85 = .15/2 = 0.075, then 0.5-0.075 = 0.425, I looked up 0.425 on my stats table and it's 1.44. I belive this would be the same method to calculate the common ones like 95% confidence level = Z.025 = 1.96 correct? But on an online quiz I'm doing, it says the answer is .19 ?
Phys.Org News Partner Science news on Phys.org
Climate change increases risk of crop slowdown in next 20 years
Researcher part of team studying ways to better predict intensity of hurricanes
New molecule puts scientists a step closer to understanding hydrogen storage