MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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what is the importance of coefficient values for proving or disproving the hypotheses?
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- Only 13% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 364 randomly selected registered voters surveyed, 55 of them will vote in the upcoming election. What can be concluded at the α 0.10 level of significance? For this study, we b. The null and alternative hypotheses would be: a. For this study, we should use Select an answer (please enter a decimal) (Please enter a decimal) (please show your answer to 3 decimal places.) c. The test statistic? '-! d. The p-value e. The p-value is ? f. Based on this, we should Select an answer g. Thus, the final conclusion is that Please show your answer to 4 decimal places.) the null hypothesis. The data suggest the populaton proportion is significantly higher than 13% at α = 0.10, so there is statistically significant evidence to conclude that the the percentage of all registered voters who will vote in the upcoming election will be higher than 13%. The data suggest the population…arrow_forwardIf the results of the test with the following hypotheses are statistically significant, we have found evidence that: Hypotheses: Ho :H1 = H2 Ha:H1>H2 Hi = H2 X1H2 X1 # X2 X1>X2 Hiarrow_forwardThe following linear hypothesis can be tested using the F-test with the exception of A) 2 = 1 and 3=B4/B5. B) B2=0. C) B1 + B2 = 1 and ß3 = -284. D) Bo=B1 and ß1 = 0. Answer: Aarrow_forward10% of all Americans suffer from sleep apnea. A researcher suspects that a higher percentage of those who live in the inner city have sleep apnea. Of the 389 people from the inner city surveyed, 47 of them suffered from sleep apnea. What can be concluded at the level of significance of α= 0.01? b.The null and alternative hypotheses would be: Ho: (please enter a decimal) H1: (Please enter a decimal) c. The test statistic = (please show your answer to 3 decimal places.) d.The p-value = (Please show your answer to 4 decimal places.)arrow_forwardAccording to a food website, the mean consumption of popcorn annually by Americans is 59 quarts. The marketing division of the food website unleashes an aggressive campaign designed to get Americans to consume even more popcorn. Complete parts (a) through (c) below. (a) Determine the null and alternative hypotheses that would be used to test the effectiveness of the marketing campaign. Ho H₁ H # 59 (Type integers or decimals. Do not round.) (b) A sample of 832 Americans provides enough evidence to conclude that marketing campaign was effective. Provide a statement that should be put out by the marketing department. P 59 OA. There is sufficient evidence to conclude that the mean consumption of popcorn has risen. OB. There is sufficient evidence to conclude that the mean consumption of popcorn has stayed the same. C. There is not sufficient evidence to conclude that the mean consumption of popcorn has risen. D. There is not sufficient evidence to conclude that the mean consumption of…arrow_forwardPlease answer A B C(a) What conditions should you check first before you conduct the hypothesis test?(b) Write the null and alternative hypotheses.(c) What type of test are you doing: right-tailed, left-tailed or two-tailed?(d) What formula should be used for the test statistic?(e) What number is the test statistic equal to?(f) Sketch a graph of the p-value(g) What p-value do you obtain? Round to the ten-thousandths.(h) Do you reject the null hypothesis or fail to reject the null hypothesis? Explain.(i) Please write a conclusion sentence, in the context of the problem, that explains to a lay person the result of the hypothesistest.arrow_forwardThe manager of a resort hotel stated that the mean guest bill for a weekend is $600 or less. A member of the hotel's accounting staff noticed that the total charges for guest bills have been increasing in recent months. The accountant will use a sample of future weekend guest bills to test the manager's claim. (a) Which form of the hypotheses should be used to test the manager's claim? Explain. Ho: u 2 600 HaiH 600 Но: и 3D 600 Ha: u + 600 The hypotheses Ho: µ 2 600 and H: µ 600 should be used because the accountant wants to test the manager's claim that the mean guest bill u is less than or equal to 600 and find evidence to support u > 600. The hypotheses Ho: u = 600 and H: µ + 600 should be used because the accountant wants to test the manager's claim that the mean guest bill u is equal to 600 and find evidence to support u + 600. (b) What conclusion is appropriate when H. cannot be rejected? We are not able to conclude that the manager's claim is wrong. We cannot conclude that u >…arrow_forward1.) Create a set of hypotheses for a test.arrow_forwardis there enough evidence to reject the claim?arrow_forward10% of all Americans suffer from sleep apnea. A researcher suspects that a higher percentage of those who live in the inner city have sleep apnea. Of the 302 people from the inner city surveyed, 36 of them suffered from sleep apnea. What can be concluded at the level of significance of αα = 0.05? For this study, we should use The null and alternative hypotheses would be: Ho: (please enter a decimal) H1: (Please enter a decimal) The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The data suggest the population proportion is not significantly larger than 10% at αα = 0.05, so there is sufficient evidence to conclude that the population proportion of inner city residents who have sleep apnea is equal to 10%. The data suggest the population proportion is not…arrow_forwardLet’s assume the average income for all majors in the School of Engineering is $80,000. However, the chair of the Computer Science department thinks their students earn more than that. Please choose the appropriate null and alternative hypotheses if the chair wanted to test this belief. a. H0: u <=80,000 Ha: u > 80,000 b. H0: u= 80000 Ha: u not= 80000 c. H0: u >80000 Ha: u < 80000 d. H0: u >80000 Ha: < 80000 e. None of the above.arrow_forward13% of all Americans suffer from sleep apnea. A researcher suspects that a different percentage of those who live in the inner city have sleep apnea. Of the 390 people from the inner city surveyed, 70 of them suffered from sleep apnea. What can be concluded at the level of significance of a = 0.10? b. The null and alternative hypotheses would be: Ho: ? 8 Select an answer O |(please enter a decimal) H1: ? E Select an answer O (Please enter a decimal) c. The test statistic ? 6 (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 ? O a f. Based on this, we should Select an answer the null hypothesis.arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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