1. What requirements must be met for a normal probability distribution to be the standard normal probability distribution? 2. What does it mean if a z-score is zero? 3. If all other quantities remain the same, how does a decrease in the margin of error, E, affect the minimum sample size requirement? 4. When is the sampling distribution of sample means guaranteed to be a normal distribution? 5. Given the same sample statistics, would a 95% or 99% confidence interval be wider? gnimes Isus 6. Find the critical value Z, for a confidence level c = 88%. 7. Find the area under the standard normal curve to the left of z =1.35. 8. Find the z-score to the right of which 31.28% of the data lies on the standard normal curve. 9. Use the standard normal distribution to find P(z<-0.58 or z>1.26).

1. What requirements must be met for a normal probability distribution to be the standard normal probability distribution? 2. What does it mean if a z-score is zero? 3. If all other quantities remain the same, how does a decrease in the margin of error, E, affect the minimum sample size requirement? 4. When is the sampling distribution of sample means guaranteed to be a normal distribution? 5. Given the same sample statistics, would a 95% or 99% confidence interval be wider? gnimes Isus 6. Find the critical value Z, for a confidence level c = 88%. 7. Find the area under the standard normal curve to the left of z =1.35. 8. Find the z-score to the right of which 31.28% of the data lies on the standard normal curve. 9. Use the standard normal distribution to find P(z<-0.58 or z>1.26).

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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