Answered: Give a 95% confidence interval, for…

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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QUESTION 9 In the case of over-identification: а. you can use the F-statistic in a test of overidentifying restrictions. you cannot use TSLS for estimation purposes. С. you must rely on your personal knowledge of the empirical problem at hand to assess whether the instruments are exogenous. d. OLS and TSLS yield the same estimate. е. All of the above. f. None of the above.
Only 19% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 339 randomly selected registered voters surveyed, 75 of them will vote in the upcoming election. What can be concluded at the αα = 0.05 level of significance? The p-value = (Please show your answer to 4 decimal places.) The p-value is ? ≤ > αα Based on this, we should Select an answer reject accept fail to reject the null hypothesis. Thus, the final conclusion is that ... A) The data suggest the population proportion is not significantly higher than 19% at αα = 0.05, so there is statistically insignificant evidence to conclude that the percentage of registered voters who will vote in the upcoming election will be higher than 19%. B) The data suggest the population proportion is not significantly higher than 19% at αα = 0.05, so there is statistically significant evidence to conclude that the percentage of registered voters who will vote in the…
A medical social worker is interested in examining the relationship between patients who receive social support by family members (yes/no) and the patients’ outcome (failure/success). She collected data over a period of a month (N=100). A chi square analysis revealed the following: χ2= 5.65, df = ?, p = .01. 1. Was a chi-square analysis appropriate to analyze these variables? How do you know?
Question 5 of 5 -/1 View Policies Show Attempt History Current Attempt in Progress Suppose that x has a beta distribution with parameters a = 2.3 and B = 1. Determine to 4 decimal places the following: a. P(X < 0.23) i b. P(0.23 < X < 0.83) i c. Mean i d. Variance eTextbook and Media Save for Later Attempts: 0 of 3 used Submit Answer Activate Go to Settin I!
A manufacturer claims that it has increased the shelf life of a line of cake mixes. Past records indicate that the average shelf life of the mix is 216 days. After a revised mix has been developed, a sample of six boxes of cake mix gave these shelf lives (in days): 215, 217, 218, 219, 216, and 217.Using α = 0.05, test the manufacturer claim that the shelf life of the cake mix is more than 216 days. a- Standard Deviation b- Testing a mean, Calculated c- Critical mean, Table d- p-value e-What do we conclude?
A certain model of car can be ordered with either a large or small engine. The mean number of miles per gallon for cars with a small engine is 6.8. An automotive engineer thinks that the mean for cars with the larger engine is higher than this. State the appropriate null and alternate hypotheses. The null hypothesis is Hoμ (Choose one) The alternate hypothesis is H₁ μu (Choose one) ×
Only 18% of registered voters voted in the last election. Will voter participation decline for the upcoming election? Of the 362 randomly selected registered voters surveyed, 62 of them will vote in the upcoming election. What can be concluded at the αα = 0.05 level of significance? The test statistic ? t z Correct = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)
from the given information in each case below, state what you know about the P-value for a chi-square test and give the conclusion for a significance level of α = 0.01. Use Table 8 in Appendix A. here is the link of table 8 https://www.webassign.net/podstat/peck_Appendix_A.pdf please answer all ? parts (Enter your answers to three decimal places.) (a) χ2 = 7.66, df = 2 ? < P-value < ?Conclusion: Reject H0 Fail to reject H0 (b) χ2 = 12.91, df = 6 ?< P-value < ?Conclusion: Reject H0Fail to reject H0 (c) χ2 = 17.77, df = 9? < P-value < ?Conclusion: Reject H0 Fail to reject H0 Fail to reject H0
I can't figure out b, tried multiple times
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Please answer part b in the picture. Also Plot the residuals vs the time periodic Compute the Durbin-Watson statistic. At the 0.05 level of significance, is there evidence of positive autocorrelation among the residuals. D= Find the critical values of the Durbin Watson statistic dL= dU= Is there evidence of a positive autocorrelation among the residuals? based on the results of the last two questions is there a reason to question the validity of the model? what conclusions can you reach concerning the relationship between daily sales and atmospheric temperature? A) no conclusions can be reached because the model may not be valid B) as the atmospheric temperature increases the daily sales increase C) according to the model atmospheric temperature has no effect on the daily sales D) as atmospheric temperature decreases the daily sales increase
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Give a 95% confidence interval, for μ1−μ2 given the following information. n1=25, ¯x1=2.37, s1=0.9 n2=45, ¯x2=2.52 s2=0.75 ±± Use Technology Rounded to 2 decimal places.