Discuss the below:
Q1:Recruit 25 volunteers who have received a medication and find they have a mean concentration of 7 with a standard deviation of 2. Assume normally distributed.
FIND: 95% CONFIDENCE INTERVAL for pop mean concentration
Find: 99% confidence interval for pop var of conc
HOW large a sample is needed to ensure the length of the CI in prob 1 is 0.5.
Q2: 100 hypertensive people are given z drug that is effective on 20 people. Effective=there blood pressure is lowered by at least 10.
What is the standard error of d?
What is the 95% confidence interval for the pop mean of d?
Can we make a statement about the effectiveness of this drug?
What does a 95% confidence interval mean in words