An advertisement for a new toothpaste claims that it reduces cavities of children in theircavity-prone years. Cavities per year for their age group are normal with mean 3 and standard deviation1. A study of 2500 children who used their toothpaste found an average of 2.95 cavities per child. Assumethat the standard deviation of the number of cavities of a child using this new toothpaste remains equalProblem 1.to 1.(a) Are these data strong enough, at the 5 percent level of significance, to establish the claim of thetoothpaste advertisement? Use the test statistic approach.(b) Without doing any recalculation, do you think there would be a change in the conclusion in part (a)if you decrease the level of significance to 1 percent? Explain your answer.

Answered: Problem 1. An advertisement for a new…

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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