I want to test whether there is a significant association between drinking coffee or caffein before school and whether it helps with my grades. I am using a test of association hypothesis. (I posted a picture of my results) My question is what would the null and alternative hypothesis be? Ho: H1

I want to test whether there is a significant association between drinking coffee or caffein before school and whether it helps with my grades. I am using a test of association hypothesis. (I posted a picture of my results) My question is what would the null and alternative hypothesis be? Ho: H1

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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Test the claim that the mean GPA of night students is smaller than 2.5 at the 0.10 significance level. The null and alternative hypothesis would be: Но:р — 0.625 Но:р 0.625 Но:> 2.5 Но: д %3 2.5 Но: н 0.625 Н:р 2.5 The test is: right-tailed two-tailed left-tailed Based on a sample of 55 people, the sample mean GPA was 2.47 with a standard deviation of 0.03 The p-value is: (to 2 decimals) Based on this we: O Reject the null hypothesis O Fail to reject the null hypothesis
Perform the appropriate test to give your conclusion
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The city council is considering a law that would ban smoking in all public facilities. A sample has been selected from the community and tested for support of the ordinance. Is there a statistically significant relationship between age and support for the anti-smoking law? Use the five-step model in making the hypothesis test and write a sentence or two interpreting your results. Use α = .05. Support For Against Total Less than 40 145 103 248 More than 40 Total Age 78 223 169 272 247 495
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Pain medications sometimes come with side effects. One side effect is dizziness. A researcher wanted to determine if some pain medications produced more or less dizziness than others. The results from his study are shown in the table below. Use a test to determine if the proportion of people within each treatment group who experienced dizziness are the same at the α = .01 level of significance. Tordol Placebo Naproxen Tylenol Advil Dizziness 83 32 36 5 8 No dizziness 4063 1832 1330 382 337 1) Determine the null and alternative hypotheses. Select the correct pair. Ho:The proportion of people within each treatment group who experienced dizziness are independentHa: The proportion of people within each treatment group who experienced dizziness are dependent Ho:The proportion of people within each treatment group who experienced dizziness are the sameHa: The proportion of people within each treatment group who experienced dizziness are different 2) Determine the…
Help with finding: test statistic p Value reject null hypothesis
Test the claim that the proportion of men who own cats is significantly different than 70% at the 0.1 significance level. The null and alternative hypothesis would be: Но: р 3 0.7 Но:д — 0.7 Но:д %3D 0.7 Но:р — 0.7 Но:р — 0.7 Но: д — 0.7 H:р +0.7 H:n # 0.7 Hi:р > 0.7 H:p > 0.7 H:р < 0.7 H:р < 0.7 The test is: two-tailed left-tailed right-tailed Based on a sample of 55 people, 75% owned cats The test statistic i: (to 2 decimals) The positive critical value is: (to 2 decimals) Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis
Using image attached A. Fill in blanks B. What are the null and alternative hypothesis? C. Find the test statistic, z0 D. Find the P-Value
Hypothesis testing will consist of four hypothesis tests which you need to complete. each test will require the following: Type of Test: Null Hypothesis: Alternate Hypothesis: SE: Test Statistic: P-value: Decision: Sentence:
You are conducting a study to see if the proportion of voters who prefer Candidate A is significantly larger than 70% at a significance level of a= 0.01. According to your sample, 59 out of 77 potential voters prefer Candidate A. 1. For this study, we should use Select an answer es 2. The null and alternative hypotheses would be: Ho: 2 vselect an answer v (please enter a decimal) H:? vSelect an answer v (Please enter a decimal) nces rations 3. The test statistic- (please show your answer to 3 decimal places.) Drive 4. The p-value = (Please show your answer to 4 decimal places.) 65 5. The p-value is Select an answer Ma t Course ions 6. Based on this, we should Select an answer v the null hypothesis. 7. As such, the final conclusion is that ... O The sample data suggest that the population proportion is not significantly larger than 70% at a 0.01, so there is not sufficient evidence to conclude that the proportion of voters who prefer Candidate A is larger than 70%. O The sample data…
Mike would like to find out if a new intervention would increase the motivation to study chemistry in high school students. He recruits 40 high schoolers and gives the intervention to 20 of the students. He then measures attitudes towards studying chemistry in all the students and compares the results for the students who got the intervention with the students who did not. Mike's study... A. Has a non-directional hypothesis and should be tested with a dependent samples t- test B. Has a non-directional hypothesis and should be tested with an independent samples t-test C. Has a directional hypothesis and should be tested with an independent samples t-test D. Has a directional hypothesis and should be tested with an dependent samples t-test