Answered: If a hypothesis is rejected at the 0.05…

Math

Statistics

If a hypothesis is rejected at the 0.05 levels of significance it

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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According to the Center for Disease Control (CDC) during the 2018-2019 season the percent of Americans 18 and older who had a flu shot was 45.3%. We did a random sample of 500 Americans and found that 200 out of the 500 had a flu shot. Is there enough evidence at the 5% level that 45.3% or less of Americans 18 or older had a flu shot? Set up the hypothesis test (Ho and Ha): a) Ho: u = 0.453 (The average of Americans who had flu shot is 45.3.) Ha: u < 0.453 (The average of Americans who had flu shot is less than 45.3. b) Ho: p = 0.453 (The proportion of Americans who had flu shot is 45.3%.) Ha: p < 0.453 (The proportion of Americans who had flu shot is less than 45.3%. c) Ho: p = 0.40 (The proportion of Americans who had flu shot is 40%.) Ha: p < 0.40 (The proportion of Americans who had flu shot is less than 40%. d) Ho: p = 0.40 (The proportion of Americans who had flu shot is 40%.) Ha: p not equal to 0.40 (The proportion of Americans who had flu shot is not equal to 40%.)
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3. The producers of a new toothpaste want to see if it is performing similar to their main whitening toothpaste in preventing cavities. Their main whitening tooth paste performance at a six-month checkup is i.73 (o-1.12). To test the new tooth paste, 60 people used it for six-months. At the checkup they found a mean of 1.5 cavities. Perform the appropriate hypothesis testing. Make sure to include all the steps (hypotheses, critical values, calculations, conclusions an interpretations). 0.0 68