40. What is the degree of freedom in a set of data if the sample size is 197A. 17В. 18 ..C. 19D. 2041. Given an area of 0.01 and degrees of freedom of 9, what is the t-value?C. 2.764A. 2.681B. 2.718D. 2.82142. What is the 90th percentile of the t-distribution with 10 degrees of freedom?A. 1.363B. 1.372C. 1.383D. 1.81243. To what percentile of the t-distribution does 2.583 belong to if the sample size is 17?A. 75hB. 90C. 95D. 99th44. Which formula is to be used in finding the length of a confidence interval?A. LCI =|LCL-UCLB.L.CI = 2t ()C. LCI = 2za/2)D. all of them45. What is the length of the confidence interval given the following data: o = 0.5, n = 70,confidence level = 95%?A. 0.17B. 0.18C. 0.19D. 0.2346. Which formula is used in determining the minimum size needed when estimating the population mean?a/2A.Z/2B.onC.D.For numbers 47 to 49, refer to the given problem.A survey on 200 GAS students of Masipag Senior High School shows that they read on an average of 15.7hours per week. The margin of error is 2.4 hours at a 95% confidence level.47. What is the value of the margin of error?A. 2.2В. 2.4С. 15.7D. 16.3

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MATLAB: An Introduction with Applications

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40. What is the degree of freedom in a set of data if the sample size is 197 A. 17 B. 18 C. 19 D. 20