Select the correct null hypothesis, Ho, andalternative hypothesis, Ha, in symbolic form.Independent samples are taken from twopopulations for which o1 and o, are known. Ahypothesis test is conducted to see if thepopulation means differ by 3 or not.ОА. Но : М — Pо < 0, На : M — M2 > 0-В. Но : И1 — M2= 0, Ha : µ1 – H2 #0ОС. Но : Z — 3, На : zc t 3D. Ho : tc3 3, На : te t 3E. Η : μι - μ3 Η, : μι-μ2 3= 3, Ha : µ1 – H2 73O F. Ho : µ1 – H2 < Zc, Ha : H1 - M2> Zc

Claim: Test the population meas differ by 3 or not The claim represents in symbolic form is, The…

Answered: Select the correct null hypothesis, Ho,…

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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Only about 10% of all people can wiggle their ears. Is this percent higher for millionaires? Of the 307 millionaires surveyed, 46 could wiggle their ears. What can be concluded at the α = 0.05 level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: (please enter a decimal) H1:H1: (Please enter a decimal) The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 3 decimal places.) The p-value is α Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The data suggest the population proportion is not significantly higher than 10% at α = 0.05, so there is statistically insignificant evidence to conclude that the population proportion of millionaires who can wiggle their ears is higher than 10%. The data suggest the populaton proportion is significantly higher than 10% at α = 0.05, so there is statistically…
In a test of hypothesis, the null hypothesis is that o = 2 and the alternative hypothesis is o> 2. The following samples were selected from two normal populations: X1 (22, 25, 32, 30, 27, 28, 24, 19, 20, 32, 28, 22, 30, 26, 22, 27, 23, 27, 32); x2 = (43, 34, 41, 35, 31, 27, 35, 33, 40, 35, 34, 40, 34, 35, 38, 40). What is the approximate p-value for this test? O c. 0.4385 a. 0.2808 O d. 0.1780 O e. 0.5339 O b. 0.5615
Suppose you want to test the claim that u, #H2. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of a = 0.05, when should you reject Ho? n, = 50, n2 = 60, x, = 29, x2 = 27, o, = 1.5, o2 = 1.9 O A. Reject H, if the standardized test statistic is less than - 1.96 or greater than 1.96. O B. Reject H, if the standardized test statistic is less than - 2.33 or greater than 2.33. O C. Reject H, if the standardized test statistic is less than -2.575 or greater than 2.575. O D. Reject H, if the standardized test statistic is less than - 1.645 or greater than 1.645.
Find the rejection region (for the standardized test statistic) for each hypothesis test. Identify the test as left- tailed, right-tailed, or two-tailed. a. Ho μ = 141 vs Hau 3.8 @ a = 0.001
Based on information from a large insurance company, 66% of all damage liability claims are made by single people under the age of 25. A random sample of 54 claims showed that 41 were made by single people under the age of 25. Does this indicate that the insurance claims of single people under the age of 25 is higher than the national percent reported by the large insurance company? State the null and alternate hypothesis. a) Ho: p = .66, Ha: p ≠ .66 b) Ho: p = .66, Ha: p > .66 c) Ho: p = .76, Ha: p < .76 d) Ho: p = .76, Ha: p > .76 e) Ho: p = .66, Ha: p < .66
Question 21 Only 11% of registered voters voted in the last election. Will voter participation change for the upcoming election? Of the 380 randomly selected registered voters surveyed, 61 of them will vote in the upcoming election. What can be concluded at the αα = 0.01 level of significance? A.)For this study, we should use Select an answer z-test for a population proportion t-test for a population mean B.)The null and alternative hypotheses would be: -H0:H0: ? p μ Select an answer < > ≠ = (please enter a decimal) -H1:H1: ? μ p Select an answer = ≠ < > (Please enter a decimal) c. )The test statistic ? z t = (please show your answer to 3 decimal places.)
If a researcher obtains a sample mean of M= 54, from a population with u = 46. With a given alpha, which combination of factors is most likely to result in rejecting the null hypothesis?
Only 15% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 347 randomly selected registered voters surveyed, 56 of them will vote in the upcoming election. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use z-test for a population proportion b. The null and alternative hypotheses would be: Họ: ? Select an answer (please enter a decimal) H.: ?vSelect an answer v (Please enter a decimal) c. The test statistic ?v (please show your answer to 4 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is v f. Based on this, we should fail to reject g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly higher than 15% at a = 0.01, so there is statistically significant evidence to conclude that the percentage of registered voters who will vote in the upcoming election will be equal to 15%. a…
collected data from 150 surveys ne nanaed out at a busy park located in the region. To continue the study into the drinking habits of adults, the researcher decides to collect data from adults working in "white collar" jobs to see whether their drinking habits are in the same proportion as the general public. The null hypothesis for this test is Ho: p = 0.26 and the alternative hypothesis is Ha: p<0.26. The researcher collected data from a random sample of 120 adults with "white collar" jobs of which 25 stated that they drank once a week or less in the last month. Assume that the conditions that must be met in order for us to use the N(0, 1) distribution as the sampling distribution are satisfied. Find the values of the sample proportion, p, the test statistic, and the p-value associated with the test statistic. Round all values to the nearest thousandth. P = 0.30, z = 0.803, p-value = 0.041 A P = 0.208, z = -1.290, p-value = 0.098 P = 0.75, z = -1.32, p-value = 0.599 P = 0.208, z =…
Suppose we want to test the null hypothesis H0 : p1 − p2 = 0.2 against the alternative hypothesis Ha : p1 − p2 < 0.2 at the 5% level of significance. Suppose also that x1 = 80, n1 = 100, x2 = 40, n2 = 80. What is the observed test statistic for this test?
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