4. \For each z-score below, find the area between the mean and the z-score:0..2410948•4052X a) z=1.17379X b) z=- 1.37.4147%3Dい740.5-

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Answered: 4. For each z-score b X a) z=1.17 %3D X…

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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Explain what Cohen's d and r2 measure when calculated for a t test
6.25 with the scale factor of 1:12
b) Calculate the p-value for Ha: ?2 > 29, n = 14, ?2 = 32.7. (c) Calculate the p-value for Ha: ?2 ≠ 43, df = 26, ?2 = 39.
Answer.
In a recent year, a research organization found that 487 of 806 surveyed male Internet users use social networking. By contrast 619 of 919 female Internet users use social networking. Let any difference refer to subtracting male values from female values. Complete parts a through V below. Assume that any necessary assumptions and conditions are satisfied. Find the proportions of male and female Internet users who said they use social networking. A. What is the difference in proportions? B. What is the standard error of the difference? C. Find a 95% confidence interval for the difference between these proportions.
H.: µ = 47.6 and H, : µ < 47.6 where u = the mean age of teachers at Ravenwood High School. The calculated p-value is 0.023. What conclusion will you make at a = 0.10? O Reject the H. O Fail to reject the H. O Reject the H. O Fail to reject the Ha
A researcher thinks that watching violent televisions increases aggressive behavior in children. To test this hypothesis, she randomly assigns 48 children into one of 3 groups (no violent TV, a little violent TV, or a lot of violent TV) and observes their playground behavior for three weeks and measures it for violence and intensity. For the variable “amount of TV” (as it appears in this problem), what is the scale of measurement? a. nominal b. ordinal c. interval d. ratio A researcher thinks that watching violent televisions increases aggressive behavior in children. To test this hypothesis, she randomly assigns 48 children into one of 3 groups (no violent TV, a little violent TV, or a lot of violent TV) and observes their playground behavior for three weeks and measures it for violence and intensity. If the researcher’s hypothesis is correct, which of the following conclusions could be drawn? a. Fail to reject the null, watching violent TV does not increase…

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4. For each z-score b X a) z=1.17 %3D X b) z =-1.37