Answered: P value associated with a t score of…

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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Hi I need help with the second question "What is the best model using the t-statistic criteria? Select the best answer below and fill in the answer boxes to complete your choice." Please let me know what option to choose from A-G and what numbers to put in the boxes.
Test for the overall significance of the model. Use =0.05. Report the F-test statistic. Round to two decimal places.
Hi, i have one question. How was the level of significance obtained? at the beginning of the exercise it is clarified that it is (α)=0.05 but I don't know where this value comes from
Previous Problem List Next A new cream that advertises that it can reduce wrinkles and improve skin was subject to a recent study. A sample of 61| women over the age of 50 used the new cream for 6 months. Of those 61 women, 52| of them reported skin improvement(as judged by a dermatologist). Is this evidence that the cream will improve the skin of more than 40% of women over the age of 50? Test using a = 0.05 (a) Test statistic: z = (b) Critical Value: 2* = (c) The final conclusion is O A. There is not sufficient evidence to reject the null hypothesis that p O B. We can reject the null hypothesis that p = 0.4 and accept that p > 0.4 That is, the cream can improve the skin of more than 40% of women over 50. 0.4 That is, there is not sufficient evidence to reject that the cream can improve the skin of more than 40% of women over 50.
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How would you report the results? The derived t = 0.02 was not significant at p = .05 with df = 10. Therefore, Ho was not rejected, and it was concluded that the mean pretest score for students at the beginning of the semester (18.27) was not different than the mean posttest score for students at the end of the semester (22.00), t(10) -= 0.02, p .05. In terms of the research question, it appears that the curriculum was not effective in promoting learning.
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ACT scores range from 1 to 36 and are normally distributed where N (21.5, 5.4). SAT scores• range from 600 to 2400 and are normally distributed where N (1498, 316). Jorge scores 2090 on the SAT. If both tests measure the same thing, what score on the ACT is equivalent to Jorge's SAT score?

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P value associated with a t score of -3.10 and 24 degrees of freedom. I am struggling with utilising t score table and quite not understand df