After running a regression you conduct a hypothesis test of Ho: ß = 2.5 versusHạ: B + 2.5 is performed using a = 0.10. The value of the test statistic z = -1.80(the critical value is -1.645). If the true value of B is 2.5, does the conclusion youreach result in Type I, Type II error, or the correct decision?O Type II ErrorO Type I ErrorO correct decisionnot enough information

The hypothesis test on regression is conducted. The null hypo. is H0:β=2.5 The alternate hypo. is…

Answered: After running a regression you conduct…

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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The NAEP considers that a national average of 283 is an acceptable performance. Using α = .05, run a two-tail t-test for one sample to test Ho: µ=283 for the 2019 scores. Report the t-obt, df, and p-values. Would you reject the null hypothesis that the 2019 scores come from a population with average 283? If this is the case, does it come from a population from larger or smaller average?
A study was undertaken to determine whether there was a significant weight (in lb) loss after one year course of therapy for diabetes, and whether the amount of weight (in lb) loss was related to initial weight. The following table gives the initial weight (x) and weight after one year of therapy (y) for 16 newly diagnosed adult diabetic patients. d. Which statistical test is appropriate to use on these data? e. Carry out the hypothesis test(s) in question in above d. Use α=0.01 (hypothesis, critical value, test statistic, conclusion) f. Are the means statistically different? g. Find the 99% confidence interval for the difference of the two means on weight. Interpret your finding
A t-test would reject the null hypothesis at a 0.05 significance level. True or False?
We found no difference on the reported self-esteem level between female participants (M=5.39, SD = .83) and male participants (M = 5.50, SD = .78), t (152) = -.86, p=.393. What was the design of this study? Between-subjects/Within-subjects (Please choose) What was the DV (variable of interest)? How many participants were included in the analysis? In average, what was male participants’ reported self-esteem level in this study? Was the null hypothesis rejected? Yes/No (Please choose)
The manager of a concert production company analyzes a regression relating ticket sales to the independent variables "spending on advertising" and "unemployment rate" in the region. The regression was based on a random sample of 30 observations. She computes the D-W statistic to be 1.2 to determine if positive autocorrelation might be a problem. At the 5% significance level, what can we conclude? Multiple Choice We do not reject the null hypothesis and conclude there is likely no autocorrelation. We reject the null hypothesis and conclude there is likely positive autocorrelation. he test is inconclusive. We cannot say whether positive autocorrelation exists. We reject the alternate hypothesis and conclude that there is likely no positive autocorrelation.
42. What is the tcritical for the hypothesis testing for the regression coefficient BsubO?
Need help writing a null hypothesis for the bivariate relationship shown in the SPSS output.
there is 0.01 and 0.05 alpha level, what is the critical cutoff z scores for both? which one is easier to reject the null hypothesis and why?
A business school is conducting a study to investigate whether a students’ scores on a placement test can be used to predict students’ starting salaries. Based on a random sample of 200 graduates of the business school, a 98 percent confidence interval for the slope of the linear regression line relating placement scores and starting salary is calculated to be (315,336). Assume the conditions for inference are met. Which of the following is a correct interpretation of the confidence interval? There is a 98 percent probability that the slope of the population regression line is between $315 per point and $336 per point. A Ninety-eight percent of the time, a 10-point increase in placement score will result in an average increase between $3,150 and $3,360 in starting salary. B We are 98 percent confident that a 10-point increase in placement score will result in a predicted increase in starting salary of between $3,150 and $3,360. C We are 98 percent…
What is the critical value for a two sided t-test with an alpha = .02, and degrees of freedom = 29?
You are testing the null hypothesis that there is no linear relationship between two variables, X and Y. From your sample of n=18, you determine that b1=5.2 and Sb1=1.2. a. What is the value of tSTAT? b. At the α=0.05 level of significance, what are the critical values? c. Based on your answers to (a) and (b), what statistical decision should you make? d. Construct a 95% confidence interval estimate of the population slope, β1.
a. Calculate and interpret the t-statistic for “pcol”. b. Write down Stata’s default null and alternate hypothesis. c. Based on the regression results, what would be the result of Stata’s default hypothesis test (you may assume a 5% level of significance).

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