2) If you were interested in testing for a statistical relationship between takingVitamin A and cold status in the population of elementary school students (i.e.:testing the null hypothesis of no difference in the proportion of colds in Vitamin Aand placebo groups, versus the alternative hypothesis of a difference inproportions), the correct statistical test is:a. Two-sample t-testb. Ad-hoc test for testing the equality of thingsc. Chi-squared testd. Paired t-test

From the provided information, the two defined attributes, which are considered in this case are…

Answered: 2) If you were interested in testing…

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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The national percentage of automobile accident fatalities that are alcohol related is 39%. In a random sample of 96 automobile accident fatalities in the state of New York, 44 were alcohol related. Is this sufficient evidence to say that new York has a higher percentage of alcohol related automobile fatalities? a. Perform the appropriate test of hypothesis and paste the session window output below. b. What is the value of the test statistic? c. At a = .10, what is your decision?
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
You are conducting a study to see if the accuracy rate for fingerprint identification is significantly different from 0.51. You use a significance level of a = 0.001. Ho:p = 0.51 H₁:p 0.51 You obtain a sample of size n = 373 in which there are 169 successes. What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a greater than a This p-value leads to a decision to... O reject the null O accept the null O fail to reject the null As such, the final conclusion is that... O There is sufficient evidence to warrant rejection of the claim that the accuracy rate for fingerprint identification is different from 0.51. O There is not sufficient evidence to warrant rejection of the claim that the accuracy rate for fingerprint identification is different from 0.51. O The sample data support the claim that the accuracy rate for fingerprint identification is different from 0.51. O There is not sufficient sample…
You wish to test the following daim (Ha) at a significance level of a = 0.001. H.:P1 2 P2 Ha:P1 < P2 You obtain a sample from the first population with 244 successes and 117 failures. You obtain a sample from the second population with 523 successes and 202 failures. test statistic = [three decimal accuracy] p-value = [four decimal accuracy) The p-value is... O less than (or equal to) a O greater than a This test statistic leads to a decision to... O reject the null hypothesis O fail to reject the null hypothesis As such, the final condusion is that... O There is sufficient evidence to support that the first population proportion is less than the second population proportion. There is not sufficient evidence to support that the first population proportion is less than the second population proportion.
You claim that the proportion of students who favored ONLINE ASSESSMENT over FACE-TO-FACE ASSESSMENT is 65% at a 5% significance level. From the analysis, the Z-test is 1.16. The correct conclusion is we have a. sufficient evidence to reject the claim. O b. insufficient evidence to reject the claim. O c. insufficient evidence to support the claim. O sufficient evidence to support the claim.
2
Our professor wants us to calculate the test statistic and p-value by hand. The test statistic is correct. I can't get the p-value to save my life. Do you know what I am doing wrong?? (All of these p-value answers are incorrect: 0.25, .1230, 2.32, .0232, .02, and .01) An article published in the Washington Post claims that 45 percent of all Americans have brown eyes. A random sample of ?=78 college students found 30 who had brown eyes.Consider testing ?0:?=.45??:?≠.45 (a) The test statistic is ? = -1.16 (b) P-value =
What is the right statistical test for problem one?
Q6: Briefly, explain the importance of the tests shown in the following table in Hypothesis testing. Kolmogorov-Smimov Weight gain: Regular Diet Keto-Diet Statistic 0.360 0.146 df Sig. 8 .000 10 0.234 Shapiro-Wilk Statistic df 0.827 0.966 8 10 Sig. 0.021 0.850
Answer choices for the blanks : 1. Contains or does not contain 2. Null or alternative 3. Sufficient or insufficient 4. Reject or support 5.insufficient or sufficient 6. Reject or support
(b) (c) (d) What is the value of the sample test statistic? Find (or estimate) the P-value. Based on your answers in parts (a) to (c), will you reject or fail to Teject the null hypothesis? Are the data statistically significant at level a? 6. Professor Jennings claims that only 35% of the students at Flora College work while attending school, Dean Benata thinks that the professor has underestimated the number of students with part-time or full-time jobs. A random sample of 76 students shows that 36 have jobs. Do the data indicate that more than 35% of the students bave jobs? Use a 5% level of significance. What are we testing in this problem? i) single proportion ii) single mean a) What is the level of significance? State the null and alternate hypotheses. what sampling distribution will you use? What assumptions are you making? b) What is the value of the sample test statistic? c) Find (or estimate) the P-value. d) Based on your answers in parts (a) to (c), will you reject or fail to…
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