Answer:
Step-by-step explanation:
all you have to do is pick to points from the graph and input then in <u>y1-y2 </u>
x1-x2
Answer: a) 0.84 b) 0.67 c) 1.28
Step-by-step explanation:
Using the standard normal distribution table for z-value , we have
(a) The value of
would result in a 80% one-sided confidence interval : 
(b) The value of
would result in a 85% one-sided confidence interval : 
(c) The value of
would result in a 90% one-sided confidence interval : 
The answer would be 920. hope that helped