Suppose 30 data points are collected, with a sample mean of 2.25. Suppose the data are from a normally distributed population with known standard deviation 0.45. a) Calculate a 95% confidence interval for the population mean. PLEASE SHOW YOUR WORK b) Please explain your results, in words. c) Calculate a 98% confidence interval for the population mean. PLEASE SHOW YOUR WORK. You do not need to explain the results, in words. Instead, answer the question in part d. d) Should the interval be wider or narrower? Please explain.

Suppose 30 data points are collected, with a sample mean of 2.25. Suppose the data are from a normally distributed population with known standard deviation 0.45. a) Calculate a 95% confidence interval for the population mean. PLEASE SHOW YOUR WORK b) Please explain your results, in words. c) Calculate a 98% confidence interval for the population mean. PLEASE SHOW YOUR WORK. You do not need to explain the results, in words. Instead, answer the question in part d. d) Should the interval be wider or narrower? Please explain.

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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