During recent primary elections, the democratic presidential candidate showed the following pre-election voter support in Alabamaand Mississippi.Voters Favoring theDemocratic CandidateStateVoters SurveyedAlabama815456Mississippi610372We want to determine whether or not the proportions of voters favoring the Democratic candidate were the same in both states.(Use Alabama - Mississippi.)(a) Provide the hypotheses.Ho: P1 - P2 20Hg: P1- P2 < 0Ho: P1- P2 + 0H: P1 - P2 = 0Ho: P1 - P2 < 0Hai P - P2 20Họ: P1 - P2 = 0H: P1 - P2 * 0Ho: P - P2 > 0Hg: P1 - P2 = 0(b) Compute the test statistic. (Round your answer to three decimal places.)(c) Determine the p-value and, at a 0.05 level of significance, test the above hypotheses.We do not reject Ho. There is no significant difference.We do not reject H,. There is a significant difference.We reject Ho. There is no significant difference.We reject H,. There is a significant difference.

Answered: Image /qna-images/answer/4fccd330-6bc5-42c0-b669-ad462bc4b38b.jpg

Answered: During recent primary elections, the…

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 the Centers of Disease Control, about 22% of American young people between the ages of 12 and 19 are obese.A student claims that the students his local schools are in better shape than the national average, so their proportion of obese students is less than 22%. Which are the appropriate null and alternative hypotheses for this study? H0: p = 22%, H1: p < 22% H0: p = 22%, H1: p ≠ 22% H0: p ≠ 0, H1: p = 0 H0: p = 22%, H1: p > 22% Suppose that the result of the statistical is to reject H0.Which is the proper conclusion? There is not sufficient evidence to conclude that the students at his local schools have a smaller true proportion of obese students. There is sufficient evidence to conclude that the students his local schools have a smaller true proportion of obese students. There is not enough information to answer this question.
According to the Centers of Disease Control, about 22% of American young people between the ages of 12 and 19 are obese.A student claims that the students his local schools are in better shape than the national average, so their proportion of obese students is less than 22%. Which are the appropriate null and alternative hypotheses for this study? H0: p = 22%, H1: p ≠ 22% H0: p ≠ 0, H1: p = 0 H0: p = 22%, H1: p < 22% H0: p = 22%, H1: p > 22% Suppose that the result of the statistical is to reject H0.Which is the proper conclusion? There is not sufficient evidence to conclude that the students at his local schools have a smaller true proportion of obese students. There is sufficient evidence to conclude that the students his local schools have a smaller true proportion of obese students. There is not sufficient evidence to conclude that the students at his local schools have a smaller sample proportion of obese students. There is sufficient evidence to conclude that the…
A health provider saw that 48% of their members received their flu shot in recent years. The health care provider tried a new advertising strategy the following year, and they took a sample of members to test if the proportion who received their flu shot had changed. Determine the null and alternative hypothesis
In Cleveland, a sample of 73 mail carriers showed that 10 had been bitten by an animal during one week. In Philadelphia, in a sample of 80 mail carriers, 16 had received animal bites. WHat is the approrpiate null hypothesis for this problem?
According to Emergency Room Statistics, in any 6 month period, 15.2% of asthmatic children not on inhalers will have an asthmatic complication requiring the emergency room. A pharmaceutical firm has developed a new steroidal inhaler. The company believes that the use of this steroidal inhaler will decrease the percentage of asthmatic children requiring emergency room care for asthmatic complications. Because the FDA requires 2-sided hypothesis tests, the company tested the following claim: In any 6 month period, the percentage of asthmatic children using their steroidal inhaler that require emergency room care for asthmatic complications will not be 15.2%. To test their claim, they took a simple random sample of 260 asthmatic children and had them use a steroidal inhaler for 6 months. Of the 260 children, 60 required emergency room care for asthmatic complications at some time in the 6 month period. (c) What is the critical value which represents a boundary between the rejection region…
In a recent survey, it was stated that Americans watch television on average four hours per day. Assume that σ = 2. Using 40 students as the sample, conduct a hypothesis test to determine if the average for students at your school is lower:
Employees of a building materials chain facing a shutdown were surveyed on a prospective employee ownership plan. Some employees pledged $10,000 to this plan, putting up $800 immediately, while others indicated that they did not intend to pledge. Of a random sample of 175 people who had pledged, 78 had already been laid off, whereas 208 of a random sample of 604 people who had not pledged had already been laid off. Test, at the 5% level against a two-sided alternative, the null hypothesis that the population proportions already laid off were the same for people who pledged as for those who did not.
A certain university has decided to introduce the use of plus and minus with letter grades, as long as there is evidence that more than 60% of the faculty favor the change. A random sample of faculty will be selected, and the resulting data will be used to test the relevant hypotheses. If p represents the proportion of all faculty that favor a change to plus-minus grading, which of the following pairs of hypotheses should the administration test? H0: p = 0.6 versus Ha: p > 0.6H0: p = 0.6 versus Ha: p < 0.6 Explain your choice. The university wishes to to determine if less than 60% favor the change. Therefore, the correct alternative is Ha: p < 0.6.The university wishes to to determine if more than 60% favor the change. Therefore, the correct alternative is Ha: p > 0.6. The university wishes to to determine if less than 60% favor the change. Therefore, the correct alternative is Ha: p > 0.6.The university wishes to to determine if more than 60% favor the change.…
If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make if ZSTAT=+1.55?
A researcher hypothesizes that Drug A is more effective than Drug B. In conducting an analysis to test this hypothesis, how should the null hypothesis be stated?
9) In 2015, the average math SAT score for students at South Hanover High School was 520. Five years later, a teacher wants to perform a hypothesis test to determine whether the average math SAT score of students at the school has changed since 2015. The hypotheses are: Ho :u=520 Ha :u=520Suppose that the results of the sampling lead to acceptance of the null hypothesis. Classify that conclusion as a Type I Error, a Type II Error, or a correct decision, if in fact the average math SAT score of students at the school is equal to 520.
If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make if ZSTAT = -0.76? If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make if ZSTAT = +2.21? If you use a 0.10 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting a null hypothesis that the population mean equals 500 if you use the Z test? If you use a 0.01 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting H0 : m = 12.5 if you use the Z test? What is the p-value if, in a two-tail hypothesis test, ZSTAT = +2.00? What is the p-value if, in a two-tail hypothesis test, ZSTAT = -1.38?

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