In a random sample of 285 potential voters registered in the state of Iowa, 120 indicated that they planned to vote in the next generalelection. In an independently chosen, random sample of 266 potential voters registered in Tennessee, 109 indicated that they plannedto vote in the next general election.Can we conclude, at the 0.10 level of significance, that the proportion p, of all potential voters in Iowa who plan to vote differs from theproportion P2of all potential voters in Tennessee who plan to vote?Perform a two-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places and round your answers as specified in the parts below. (Ifnecessary, consult a list of formulas.) (a) State the null hypothesis H. and the alternative hypothesis H,.HoSH :0(b) Determine the type of test statistic to use.(Choose one) ▼O=0ロSロ(c) Find the value of the test statistic. (Round to three or more decimal places.)O

Answered: Image /qna-images/answer/af103aab-a3a3-4c62-b905-0195963554d3.jpg

Answered: (a) State the null hypothesis H, and…

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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You are testing the claim that the mean GPA of night students is different from the mean GPA of day students. A sample of 24 night students and 28 day students and their GPA's are recorded below. Test the claim using a 1% level of significance. Assume the population variances are unequal and that GPAs are normally distributed. Give answers to 4 decimal places. GPA-Night GPA-Day 3.05 3.38 2.91 3.02 3.27 3.4 3.29 2.73 3.3 3.24 3.35 2.69 3.39 3.25 3.52 3.33 3.39 2.33 3.25 3.51 3.08 3.07 3.27 2.9 3.32 3.48 3 2.94 3.62 2.93 3.64 3.31 3.54 2.62 3.45 2.66 3.29 3.27 3.56 2.76 3.15 2.7 3.4 3.27 3.51 2.96 3.54 2.86 3.24 2.72 2.64 3.14 What are the correct hypotheses? Note this may view better in full screen mode. Select the correct symbols in the order they appear in the problem.H0: Select an answer x̅₂ s² x̅₁ σ² μ₂ μ₁ p ? = ≠ > < ≥ ≤ Select an answer 0 μ₂ x̅₂ x̅₁ σ² p s² μ₁ H1: Select an answer σ² x̅₂ x̅₁ μ₁ μ₂…
In a poll of 1500 adults in July 2010, 780 of those polled said that schools should ban sugary snacks and soft drinks. Complete parts a and b below. 1. Find the value of the test statistic z. z = _____ (Round to two decimal places as needed.) 2. Find the value of the corresponding p-value for this test statistic z. p-value = _____ (Round to three decimal places as needed.) 3. Do you reject or not reject the null hypothesis? 4. b. Choose the best interpretation of the results you obtained in part a.
Need help with parts C & D The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An acupuncturist claims that her treatment can reduce this figure significantly. A random sample of 191 Americans is administered the acupuncturists treatment and 25 report experiencing migraines.a. State Hypotheses to the scenario using the correct symbols. b. What is the sample proportion? (Round to 2 decimal places) ˆpp^= c. Suppose the P-value is calculated to be 0.0318What would your decision be for this test using α=α= 0.025? fail to reject the null accept the null reject the null d. Write a conclusion in terms of the acupuncturist's claim. Use the model provided by the instructor. Assume no errors were made.
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p = 0.4 versus H₁: p > 0.4 n = 125; x = 55; x = 0.05 Click here to view page 1 of the table. Click here to view page 2 of the table. Calculate the test statistic, Zo. = Zo 0.91 (Round to two decimal places as needed.) Identify the P-value. P-value = (Round to three decimal places as needed.)
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p=0.8 versus H₁: p > 0.8 n = 250; x = 220; α = 0.05 Click here to view page 1 of the table. Click here to view page 2 of the table. Calculate the test statistic, Zo. Zo = 3.16 (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.)
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: p=0.7 versus H1: p>0.7 n=200; x=150; α=0.05 Click here to view page 1 of the table. LOADING... Click here to view page 2 of the table. LOADING... Calculate the test statistic, z0. z0=nothing (Round to two decimal places as needed.) Identify the P-value. P-value=nothing (Round to three decimal places as needed.) Choose the correct result of the hypothesis test for the P-value approach below. A. Do not reject the null hypothesis, because the P-value is less than α. B. Do not reject the null hypothesis, because the P-value is greater than α. C. Reject the null hypothesis, because the P-value is greater than α. D. Reject the null hypothesis, because the P-value is less than α.
Find the P-value. (Round to three decimal places as needed.) Based on these results, what is your conclusion? Choose the correct answer below. A. Rejectthe null hypothesis. There is not sufficient evidence of an association between race and the section of the apartment complex in which people live. B. Reject the null hypothesis. There is sufficient evidence of an association between race and the section of the apartment complex in which people live. C. Fail to reject the null hypothesis. There is sufficient evidence of an association between race and the section of the apartment complex in which people live. D. Fail to reject the null hypothesis. There is not sufficient evidence of an association between race and the section of the apartment complex in which people live
Given the sample data.x: 21 17 13 30 27 (d) Use the defining formulas to compute the sample variance s2 and sample standard deviation s. (Round your answers to two decimal places.) (e) Suppose the given data comprise the entire population of all x values. Compute the population variance ?2 and population standard deviation ?. (Round your answers to two decimal places.)
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p = 0.3 versus H1: p> 0.3 %3D n = 100; x = 45; a = 0.05 Click here to view page 1 of the table. Click here to view page 2 of the table. Calculate the test statistic, zo- Zo = (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. 2 parts remaining Clear All Check Answer Screen Shot 202....png Show All
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p = 0.8 versus H: p> 0.8 n = 250; x = 215; a = 0.1 Click here to view page 1 of the table. Click here to view page 2 of the table. Calculate the test statistic, Zo- Zo = 2.37 (Round to two decimal places as needed.) Identify the P-value. P-value = 0.009 (Round to three decimal places as needed.) Choose the correct result of the hypothesis test for the P-value approach below. A. Reject the null hypothesis, because the P-value is less than a. B. Do not reject the null hypothesis, because the P-value is greater than a. C. Reject the null hypothesis, because the P-value is greater than a. D. Do not reject the null hypothesis, because the P-value is less than a. O O O
3/ a. Test the claim that the contents of cans of diet soda have weights with a mean that is less than the mean for the regular soda. What are the null and alternative hypotheses? The test statistic, t, The P-value is State the conclusion for the test. A. Fail to reject the null hypothesis. There is sufficient evidence to support the claim that the cans of diet soda have mean weights that are lower than the mean weight for the regular soda. B. Reject the null hypothesis. There is not sufficient evidence to support the claim that the cans of diet soda have mean weights that are lower than the mean weight for the regular soda. C. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that the cans of diet soda have mean weights that are lower than the mean weight for the regular soda. D. Reject the null hypothesis. There is sufficient evidence to support the claim that the cans of diet soda have mean weights…
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: p=0.8 versus H1: p>0.8 n=250; x=215; α=0.1 Click here to view page 1 of the table. LOADING... Click here to view page 2 of the table. LOADING... Calculate the test statistic, z0. z0=nothing

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