3. Suppose that a one-tail t-test is being applied to find out if the populationmean is less than 50. The level of significance is 0.05 and 25 observationswere sampled. The critical vale of t is:A. t = 1.708C. t = -1.711B. t = 1.318D. t = -1.3164. Find the area under the t- distrihution from t = -2.228 to t = 2.228 whenn = 11.A. 0.90C. 0,975B. 0.95D. 0.9955. Identify the percentile rank of the t- distribution when t = 1.699 and df =29.A. 90thC. 97.5thB. 95thD. 99.5th6. Which of the following is true about the t- distibution?A. A t-distribution is composed of bell-shaped curves. Each curverepresents a degree of freedom.B. As the sample size decreases, the t-distribution approaches thestandard normal distribution.C. The population is not normally distributed.D. The distribution at the left of the mean is not the same as the distributionat the right of the mean.7. This table shows the probabilities/areas of the t- distribution for differentdegrees of freedom. This is used to find the critical values of t.A. c- tableC. t- tableB. d – tableD. z - table8. What are the critical values of i when n = 25 an the confidence level = 90%in two tails?A. +2.064B. ±1.708

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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3. Suppose that a one-tail t-test is being applied to find out if the population mean is less than 50. The level of significance is 0.05 and 25 observations were sampled. The critical vale of t is: A. t= 1.708 C. t= -1.711 B. t = 1.318 D. t = -1.316