If a =0.05 and df=26for a left-tailed test,what is the critical value of x??A.Xổ 05 = 38.885Xổ.05В.15.379C.Xã.95 = 38.8852D.Xá.95 = 15.379

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Answered: If a =0.05 and df=26 for a left-tailed…

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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Consider a random sample of size n from a normal distribution with unknown mean u and unknown variance o?. Suppose the sample mean is X and the sample variance is S?. n = 16, the observed sample mean i is 8.9. the observed sample variance s? is 25 and 4o : 10.5. Suppose we now want to test Ho : o? = of versus H1 : o? + of. Which of these test statistics should we use? Select one: (n-1)s? W = of a. O b. Z %3D O c. T= S/n Let o = 36. What is the (appropriate) observed test statistic? Give answer to three decimal places. What is the p-value of the (appropriate) observed test statistic for testing Ho : o? = of versus H1 : o? + of you just computed? Give answer to three decimal places.
Historically it is known thatp = 36.3% of the population have a specified characteristic. A random sample of size n=500 is taken, and x=167 number of the population has the specified characteristic. Determine the value of the test statistic for the hypothesis test of one proportion with null hypothesis Ho: p = 36.3%. Enter your answer to two decimal places.
Q10. Suppose the alternative hypothesis for a particular test is given by H1: p ≠ 0.50. What is theP-value for this test if test statistic z = 1.35.a. 0.2010b. 0.0885c. 0.9115d. 0.1770
Use the following scenario for questions 28-30: A sample is selected from a population with u = 50. After a treatment is administered to the 16 individuals in the sample, the mean is found to be M = 55 and the standard deviation is s = 8. What is the appropriate critical value for a one-tailed (right-tailed) test at a = .05? 券

H. Let X1,..., X, be a random sample from some distribution with unknown u. It's known that X 100 and X = 1783. %3D %3D (40) Supposen = 144 and o? = 12. The value of a, corresponding to the confidence interval [0.7, 1.3] is (a) 0.212 (b) 0.122 (c) 0.050 (d) 0.298
For the coefficient of an independent variable to be statistically significant and accepted as a valid estimate of the population coeficient, the prob. (or p-value) associated with the coefficient must be: O less than 0.01 O larger than 0.10 equal to or less than 0.05 O less than 1.00.
Consider a random sample of size n from a normal distribution with unknown mean u and unknown variance o?. Suppose the sample mean is X and the sample variance is S?. n = 16, the observed sample mean i is 8.9. the observed sample variance s is 25 and µo = 10.5. Suppose we now want to test Ho : o² = of versus H1 : o? + of. Which of these test statistics should we use? Select one: O a. W = (n-1)s O b. Z X-P O c. T = S/n Let of = 36. What is the (appropriate) observed test statistic? Give answer to three decimal places.
A random sample of size 25 from a normal population has a mean of x-bar = 62.8 and s = 3.55. If you were to test the following hypothesis at the .05 level of significance. The value of the test statistic is Họ: H = 60 %3D Họ: H+60 O-3.94 O 0.79 -0.79 O 3.94 O 2.8
What is the critical value? A. 2.33 B. 2.492 C. 2.575 D. 2.797
A sample of n=4 scores has a mean of M=75. Find the z-score for this sample: a. If it was obtained from a population with m=80 and SD=10. b. If it was obtained from a population with m=80 and SD=20. c. If it was obtained from a population with m=80 and SD=40.
Answer.

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If a =0.05 and df=26 for a left-tailed test, what is the critical value of x?? 2 А. Xổ.05 = 38.885 Xổ.05 = 15.379 C. Xổ 95 = 38.885 2 Xã.95 Xổ 95 = 15.379 D. B.