According to the U.S. Census Bureau, 69% of children under the age of 18 years in the United States lived with two parents in 2009.Suppose that in a recent sample of 2000 children, 1249 were living with two parents.a. Using the critical value approach and a = 0.05, test whether the current percentage of all children under the age of 18 years in theUnited States who live with two parents is different from 69%.Round your answer for z to two decimal places.Zobserved =iZcritical left =iZcritical rightiWethe null hypothesis.We conclude that the current percentage of all children under the age of 18 years in the United States who live with two parents is69%.b. How do you explain the TypeI error in part a? What is the probability of making this error in part a?The Type I error occurs when we conclude that the current percentage of all children under the age of 18 years in the United Stateswho live with two parents is69%, when it is69%.P(Type I error) =c. Calculate the p-value for the test of part a. What is your conclusion if a = 0.04?Round your answer for the p-value to four decimal places.p-value =iFor a = 0.04, wev Ho.

Answered: Image /qna-images/answer/d4f07e53-9834-4d26-ac2b-87764edb7dec.jpg

Answered: According to the U.S. Census Bureau,…

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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In a city with three high schools, all the ninth graders took a Standardized Test, with these results: Number of ninth graders High School Mean score on test Glenwood Central City Lincoln High 81 92 72 273 333 159 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 81.7. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. mean of all ninth grader's scores =
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