A researcher claims that the proportion of college students who plan to participate in community service after graduation isgreater than 35%. To test this claim, a survey asked 500 randomly selected college students if they planned to performcommunity service after graduation. Of those students, 195 indicated they planned to perform community service.The following is the setup m the following hypothesis test:Ho : p-0.35Ha : p>0.35In this example, the p-value was determined to be 0.030.Come to a conclusion and interpret the results for this hypothesis test for a proportion (use a significance level of 5%)Select the correct answer below:OThe decision is to reject the Null Hypothesis.The conclusion is that there is enough evidence to support the claimOThe decision is to fail to reject the Null Hypothesis.The conclusion is that there is not enough evidence to support the claim

Test hypothesis:Denote the population proportion of students who plan to participate in the…

Answered: A researcher claims that the proportion…

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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Three admission test preparation programs are being evaluated. Suppose the scores obtained by a sample of 20 people who used the programs provided the following data. Program A B C 510 450 600 400 510 620 490 400 580 520 430 490 490 480 590 630 360 640 550 560 Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Use ? = 0.05. State the null and alternative hypotheses. -H0: MedianA ≠ MedianB ≠ MedianCHa: MedianA = MedianB = MedianC -H0: MedianA = MedianB = MedianCHa: MedianA ≠ MedianB ≠ MedianC -H0: All populations of test scores are identical.Ha: Not all populations of test scores are identical. -H0: MedianA = MedianB = MedianCHa: MedianA > MedianB < MedianC -H0: Not all populations of test scores are identical.Ha: All populations of test scores are identical. Find the value of the test statistic. (Round your answer to two decimal places.) Answer=?? Find the p-value.…
56% of all statistics classes require a statistical calculator and 28% require the use of a computer that statistical software. Of the classes that require a statistical calculator, 14% also require the use of a computer. If a statistics course is selected at random find: (round to 4 decimal places where possible) a. P(Statistical Calculator) = %3D b. P(Statistical Software) = %3D c. P(Require a Statistical Calculator and Statistical Software) = d. P(Require a Statistical Calculator GIVEN Require Statistical Software) = %3D
Which of the following decrease(s) power in hypothesis testing? A. Increasing the sample size. B. Decreasing αα level. C. Increasing the population variance. D. Increasing the difference in the means of the two conditions in an independent-samples design. E. A and D F. B and C G. B and D H. C and D
In 2002, the General Social Survey Conducted by StatsSa, participants was asked the following questions. :1. Do you favour or oppose the death of penalty for persons convicted of murder? 2. Do you think the use of marijuana should be made legal or not? If you want to know if there is a relationship between death penalty and marijuana beliefs, what hypotheses should you test? If the Chi-square test statistic = 0.287,what is the appropriate conclusion?
In studying the responses to questions on a multiple-choice test, the following sample data are obtained. At the α=0.10 significance level, test the claim that the responses occur with the same frequency. H0 : The responses to the questions occur with the same frequency. H1 : The responses to the questions do not occur with the same frequency. Response ObservedFrequency ExpectedFrequency (O-E)2E A 11 B 8 C 6 D 7 E 16 What is the χ2 test-statistic for this data? Round to four decimal places.χ2= What is the p -value? Round to four decimal places. p -value= What would be the conclusion of this hypothesis test? Reject the null hypothesis. Fail to reject the hull hypothesis. What is the final conclusion? There is not sufficient evidence to conclude the test question responses occur with the same frequency. There is sufficient evidence to conclude the test question responses do not occur with the same frequency. There is not sufficient evidence…
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A research group conducted an extensive survey of 3044 wage and salaried workers on issues ranging from relationships with their bosses to household chores. The data were gathered through hour-long telephone interviews with a nationally representative sample. In response to the question, "What does success mean to you?" 1586 responded, "Personal satisfaction from doing a good job." Let p be the population proportion of all wage and salaried workers who would respond the same way to the stated question. Find a 90% confidence interval for p. (Round your answers to three decimal places.) lower limit upper limit
In a study, a large sample representative of the households in the US were asked about their smoking habits. The data suggested that current smokers were on average much healthier than those who recently stopped smoking. Investigators concluded that smoking does not necessarily lead to worse health outcomes. Consider the following statements. Select the ones you agree with, based on the information given. Group of answer choices A.In a randomized experiment, smoker and non-smoker groups are similar across all potential characteristics. b.The conclusions were justified by the data. c.This is an observational study. d.This study is a randomized controlled experiment. e.The results can be explained due to confounding. Current smokers are different from those who recently stopped in ways that are related to health outcomes.
In each graph, the shaded region represents the P-value of a hypothesis test. Find the P-value, given that the Standardized Test Statistic is Z = - 1.1. Round to 4 decimals a. -4 -3 -2 -1 3 4 b. -4 -3 -2 -1 1 1 3. Submit Question MacBook Air 2.
You are conducting a multinomial hypothesis test for the claim that the 4 categories occur with the following frequencies:HoHo : pA=0.3pA=0.3; pB=0.3pB=0.3; pC=0.2pC=0.2; pD=0.2 Complete the table. Category ObservedFrequency ExpectedFrequency SquaredResidual A 35 B 25 C 15 D 25
When we test the hypothesis that the population proportions are equal, we can use the Z test for a one-sided as well as a two-sided alternative. Select one: a. False b. True C. Not sure

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