The Thneedville governing cabal wants to distributestimulus packets to needy Thneed households. A Thneedhousehold is needy if they own fewer than 31 marbles.The most recent NTS (Needy Thneed Service) data indicatesthat 41% of all Thneed households are needy. On the otherhand, that data is more than 2 years old, and FrederickThneed Jr. suspects that the current percentage of needyThneed households is lower than 41%, and they decide toperform a significance test to justify their belief.The hypotheses for this test are H0: Population % =41%; HA: Population % #41%.Frederick surveys a simple random sample of n=100households, and finds that 35 of them are needy.The z-score for this test is [Select]The p-value for this test is [Select]

We have given that Population proportion (p) = 41% = 0.41 sample size (n) = 100 Number of success…

Answered: The Thneedville governing cabal wants…

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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he North American Free Trade Agreement (NAFTA) enacted in 1994 is a trilateral trade agreement signed by the United States, Canada and Mexico. This trade agreement has been controversial since its inception and Americans remain split on the issue. In a Gallup Poll conducted February 1-5, 2017, 420 out of 912 randomly selected Americans aged 18 or older stated that they believed that NAFTA was bad for the United States. Find the point estimate for the proportion of Americans who believe that NAFTA was bad for the United States. Round your answer to 4 decimal places. Find the margin of error for a 95% confidence interval. Round your answer to 4 decimal places. Construct the 95% confidence interval for the proportion of Americans who believe that NAFTA was bad for the United States. Enter your answer as an open interval of the form (a,b) and round to 3 decimal places. Can you conclude that more than half of Americans believe that NAFTA was bad for the United States? No conclusions can…
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The State of Virginia has instituted a series of standards of learning (SOL) tests in math, history, English, and science that all high school students must pass with a grade of 70 before they are allowed to graduate and receive their diplomas. The school superintendent of Montgomery County believes the tests are unfair because the test scores are closely related to teacher salary and tenure (i.e., the years a teacher has been at a school). The superintendent has sampled 12 other county school systems in the state and accumulated the following data for average teacher salary and average teacher tenure: a. Using Excel or QM for Windows, develop the multiple regression equation for these data. b. What is the coefficient of determination for this regression equation? Do you think the superintendent is correct in his beliefs? c. Montgomery County has an average SOL score of 74, with an average teacher salary of $27,500 and an average teacher tenure of 7.8 years. The superintendent has…
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