15. If a teacher is trying to prove that new method of teaching math is more effective than traditional one, he/she will conduct a: A. one-tailed test C. confidence interval D. point estimate of the population parameter B. two-tailed test

15. If a teacher is trying to prove that new method of teaching math is more effective than traditional one, he/she will conduct a: A. one-tailed test C. confidence interval D. point estimate of the population parameter B. two-tailed test

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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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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15. If a teacher is trying to prove that new method of teaching math is more effective than traditional
one, he/she will conduct a:
A. one-tailed test
C. confidence interval
D. point estimate of the population parameter
B. two-tailed test

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Why would manufacturers or businesses be interested in constructing a confidence interval for the population measure? Would manufacturers or businesses want large or small margins of error?
What effect would increasing sample size have on a confidence interval? What effect would decreasing sample size have on the margin of error?