06:23A myopenmath.comYou are conducting a study to see if the proportion ofvoters who prefer the Democratic candidate issignificantly smaller than 73% at a level of significanceof a = 0.01. According to your sample, 40 out of 59potential voters prefer the Democratic candidate.a. For this study, we should useSelect an answerb. The null and alternative hypotheses would be:Ho: ? OSelect an answer >(pleaseenter a decimal)H1: ? 0Select an answer ©(Pleaseenter a decimal)c. The test statistic ? O(pleaseshow your answer to 3 decimal places.)d. The p-value(Please show your%3Danswer to 4 decimal places.)e. The p-value is ? 0f. Based on this, we should Select an answer thenull hypothesis.g. Thus, the final conclusion is that ...O The data suggest the populationproportion is not significantly smaller than73% at a = 0.01, so there is sufficientevidence to conclude that the proportionof voters who prefer the Democraticcandidate is equal to 73%.The data suggest the populatonproportion is significantly smaller than73% at a = 0.01, so there is sufficientevidence to conclude that the proportionof voters who prefer the Democraticcandidate is smaller than 73%The data suggest the populationproportion is not significantly smaller than73% at a = 0.01, so there is not sufficientevidence to conclude that the proportion%3Dof voters who prefer the Democraticcandidate is smaller than 73%.h. Interpret the p-value in the context of the study.O If the sample proportion of voters whoprefer the Democratic candidate is 67%and if another 59 voters are surveyed thenthere would be a 18.4% chance ofconcluding that fewer than 73% of allvoters surveyed prefer the Democraticcandidate.There is a 73% chance of a Type I error. prefer the Democratic candidate is 67%and if another 59 voters are surveyed thenthere would be a 18.4% chance ofconcluding that fewer than 73% of allvoters surveyed prefer the Democraticcandidate.There is a 73% chance of a Type I error.O If the population proportion of voters whoprefer the Democratic candidate is 73%and if another 59 voters are surveyed thenthere would be a 18.4% chance fewer than67% of the 59 voters surveyed prefer theDemocratic candidate.There is a 18.4% chance that fewer than73% of all voters prefer the Democraticcandidate.i. Interpret the level of significance in the contextof the study.There is a 1% chance that the proportionof voters who prefer the Democraticcandidate is smaller than 73%.If the population proportion of voters whoprefer the Democratic candidate is 73%and if another 59 voters are surveyed thenthere would be a 1% chance that we wouldend up falsely concluding that theproportion of voters who prefer theDemocratic candidate is smaller than 73%O If the proportion of voters who prefer theDemocratic candidate is smaller than 73%and if another 59 voters are surveyed thenthere would be a 1% chance that we wouldend up falsely concluding that theproportion of voters who prefer theDemocratic candidate is equal to 73%.There is a 1% chance that the earth is flatand we never actually sent a man to themoon.Hint:HelpHelpful Videos: CalculationsInterpretations [+][+] Setup [+]Question Help: O Message instructorSubmit Question

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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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A public opinion poll surveyed a simple random sample of voters. Respondents were classified by gender (female or male) and by voting preference (Republican, Democrat, or Independent). The results are presented here: Republican 261 202 Female Male You want to determine if gender and voting preference are independent. Use a level of significance of a = 0.05. What is the test statistic for this test? (Round your answer to three decimal places.) Democrat 239 181 Independent 42 62
Only about 17 of all people can wiggle their ears. Is this percent lower for millionaires? Of the 319 millionaires surveyed, 45 could wiggle their ears. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: py (please enter a decimal) %3D H: p # (Please enter a decimal) c. The test statistic t v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 3 decimal places.) e. The p-value is s a f. Based on this, we should fail to reject g. Thus, the final conclusion is that... the null hypothesis. OThe data suggest the populaton proportion is significantly lower than 17% at a = 0.01, so there is statistically significant evidence to conclude that the population proportion of millionaires who can wiggle their ears is lower than 17%. O The data suggest the population proportion is not significantly lower than 17% at a = 0.01, so there is…
Ann and Sam are both testing the hypothesis that 40% of plain M&M are orange. Ann draws a sample of 150 plain M&M and finds that 45% of her sample is orange. Ann's test statistic is?
A publisher reports that 56 % of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 200 found that 47 % of the readers owned a particular make of car. State the null and alternative hypotheses. Answer 囲 Tables E Keypad Keyboard Shortcuts Ho:
In 1942, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on occasion consume, alcoholic beverages?" Of the 1100 adults surveyed, 440 indicated that they were total abstainers. In a recent survey, the same question was asked of 1100 adults and 418 indicated that they were total abstainers. Complete parts (a) and (b) below. C "1.M1 M2 Find the test statistic for this hypothesis test. 0.96 (Round to two decimal places as needed.) Determine the P-value for this hypothesis test. (Round to three decimal places as needed.)
• Question 16 A news article that you read stated that 53% of voters prefer the Democratic candidate. You think that the actual percent is different. 122 of the 272 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v| Select an answerv (please enter a decimal) H1: |?vSeect an answerV (Please enter a decimal) c. The test statistic ?v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ?v a f. Based on this, we should Select an answerv the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly different 53% at a = 0.10, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different 53%. O The data…
Suppose the null hypothesis is rejected. State the conclusion based on the results of the test. Six years ago, 11.4% of registered births were to teenage mothers. A sociologist believes that the percentage has increased since then. Which of the following is the correct conclusion? O A. There is sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O B. There is sufficient evidence to conclude that the percentage of teenage mothers has increased. O C. There is not sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O D. There is not sufficient evidence to conclude that the percentage of teenage mothers has increased.
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need help with B, C, D
A political scientist claims that 38% of first-year college students characterize themselves as being “moderate” or “middle of the road” as far as their political affiliation is concerned. Believing this claimed value is too high, you survey a random sample of 400 first-year college students and find that 120 characterize themselves as being “moderate” or “middle of the road.” Based on this information, what will the test statistic be? Choose the answer below that is closest to what you calculate, and try not to do a lot of rounding until you get to the very end of your calculations. 1. -0.3 2. -1.2 3. -2.6 4. -3.3 5. None of the other answer options are correct because the test statistic should be positive, not negative.
You take 115 random samples from a population of trees for which the mean height in feet is μ=72μ=72 (but you do not know this), and use each set of data to do a hypothesis test at a 5% level of significance to determine if the population mean is not 72. So the hypotheses are:Ho:μ=72Ho:μ=72Ha:μ≠72Ha:μ≠72In how many of the 115 hypothesis tests would you expect to reject Ho and conclude that the population mean is not 72? Do not round your answer.
During the first few weeks of the new television season, the evening news audience proportions were recorded as ABC - 31%, CBS - 34%, and NBC - 35%. A sample of 800 homes taken recently yielded the following viewing audience data. Number of Homes ABC 305 CBS 255 NBC 240 We want to determine whether or not there has been a significant change in the proportion of viewing audience of the three networks. a. State the null and alternative hypotheses to be tested. b. Compute the expected frequencies. c. Compute the test statistic. d. Determine the p-value for this test. Make a conclusion in the context of this problem

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