**Transcription for Educational Website:**---Larry wants to do everything possible to be in a position to detect that a treatment he has designed is effective given that it is actually effective. Which of the following should he do?- Decrease the sample size- Use an alpha (α) of .01 instead of .05- Decrease the population standard deviation- Use an alpha (α) of .05 instead of .01---**Explanation:**This text presents a multiple-choice question focusing on statistical decision-making, particularly in hypothesis testing. It explores how changes in sample size, alpha levels, and population standard deviation affect the ability to detect treatment effectiveness. This is relevant for designing experiments and interpreting statistical results.

Larry wants to detect that a treatment is effective given that it is actually effective. To check…

Answered: Larry wants to do everything possible…

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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tuition for the current academic year is $60,000, but the university claims that the average grants and scholarship aid received is $37,000. You want to check and see if the tuition net of aid is in fact $23,000, so you ask a random sample of n = 20 students what net tuition they pay. From your survey you find ?̅ = $25,000 with a sample standard deviation of s = $5,000. Test your hypothesis at the 90% confidence level using the p- value approach.
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=20.5σ=20.5. You would like to be 99% confident that your estimate is within 2 of the true population mean. How large of a sample size is required?
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