What is th enull and alt. hypothesis? the test statistic? the P-value? What is the conclusion? In a previous year, 56% of females aged 15 years of age and older lived alone. A sociologist tests whether this percentage is different today by conducting a random sample of 700 females aged 15 yearsof age and older and finds that 406 are living alone. Is there sufficient evidence at the x = 0.05 level of significance to conclude the proportion has changed?Identify the null and alternative hypotheses for this test.O A. Ho: p=0.56H₁: p=0.56Ⓒ D. Ho: p *0.56H₁: p=0.56Find the test statistic for this hypothesis test.Z= (Round to two decimal places as needed.)OB. Ho: p=0.56H₁: p<0.56O E. Ho: p=0.56H₁: p > 0.56(...)OC. Ho: p > 0.56H₁: p=0.56OF. Ho: p<0.56H₁: p=0.56

From the provided information, Sample size (n) = 700 From which 406 are living alone. Level of…

Answered: In a previous year, 56% of females aged…

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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It the 1980s, it was generally believed that congenital abnormalities affected about 6% of a large nation's children. Some people believe that the increase in the number of chemicals in the environment has led to an increase in the incidence of abnormalities. A recent study examined 414 randomly selected children and found that 28of them showed signs of an abnormality. Is this strong evidence that the risk has increased? (Consider a P-value of around0.05to represent reasonable evidence.) What is the test statistic? What is the P-value?
Can you write it in text please so I can copy and paste it!! Thank you
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Researchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 Difference Score (Di) (Di - Mdiff)2 1 22 22 0 2 32 34 -2 3 24 25 -1 4 28 30 -2 5 26 29 -3 What is the observed test statistic (i.e., tobs)? Round to 2 decimal places.
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You suspect that drivers for Uber/Lyft have newer cars than a driver who doesn’t drive for Uber/Lyft. Listed below are the ages of cars that you randomly sampled from the streets of Portland. If one were to conduct a hypothesis test for the difference in mean car age and mean Uber/Lyft car age, the conditions for the test would need to be checked. What conditions should you check? Check the conditions and explain how the conditions are met or not. What is the appropriate test to conduct, an independent samples t test or paired t test? Explain. Uber/Lyft car age 4 0 8 11 14 3 4 4 3 5 8 3 3 7 4 6 6 1 8 2 15 11 4 Non-Uber/Lyft Car age 8 8 0 3 8 4 3 3 6 11 7 7 6 9 5 10 8 4 3 4
Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given below for Fridays on the 6th of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a Friday, the numbers of hospital admissions from motor vehicle crashes are not affected. Friday the 6th: Friday the 13th: 10 10 13 11 13 69 11

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