According to a study on the effects of smoking by pregnant women on rates of asthma in theirchildren, for expectant mothers who smoke 20 cigarettes per day, 22.2% of their childrendeveloped asthma by the age of two in the US. A biology professor at a university would like totest if the percentage is less in another country. She randomly selects 319 women who onlydeliver one child and smoke 20 cigarettes per day during pregnancy in that country and findsthat 81 of the children developed asthma by the age of two. In this hypothesis test,Do the hypothesis test. Use a level of significance of a = 0.05;Use the unrounded values in Excel to find the answers for #3 and #4.1. This is an example of ahypothesis test.2. Find the standard error.3. Find the z value.4. Find the p-value.5. The biology professor should he null hypothesis. -

The question is about hypothesis testing.Given :Population proportion of children developed asthma (…

Answered: According to a study on the effects of…

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 a study on the effects of smoking by pregnant women on rates of asthma in their children, for expectant mothers who smoke 20 cigarettes per day, 22.2% of their children developed asthma by the age of two in the US. A biology professor at a university would like to test if the percentage is less in another country. She randomly selects 320 women who only deliver one child and smoke 20 cigarettes per day during pregnancy in that country and finds that 79 of the children developed asthma by the age of two. In this hypothesis test, Do the hypothesis test. Use a level of significance of a = 0.05; Use the unrounded values in Excel to find the answers for #3 and #4. hypothesis test. 1. This is an example of a 2. Find the standard error. 3. Find the z value. 4. Find the p-value. 5. The biology professor should he null hypothesis. --
In the Star and Tribune newspaper, there is an article entitled “1 in 8 school buses fail tests." The article says that the overall statewide proportion of school buses that fail safety tests is 9%. However, one bus company has a higher rate of over 12%. Assume that we want a new estimate for the statewide proportion of school buses that fail the safety inspection. We take a sample of 200 buses and find that 20 buses fail the safety inspection. If we construct a 95% confidence interval estimate for the true proportion of all Minnesota school buses that fail the safety tests, what is the upper limit of the interval? (Enter you answer including 3 decimal positions, e.g. .234)

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