- 6 12 141 The Following Contingency Table Shows The Observed Values Of Samples From Three Different Populations 12 20 32 1 (20.47 KiB) Viewed 40 times
- 6 12 141 The Following Contingency Table Shows The Observed Values Of Samples From Three Different Populations 12 20 32 2 (33.02 KiB) Viewed 40 times
- 6 12 141 The Following Contingency Table Shows The Observed Values Of Samples From Three Different Populations 12 20 32 3 (21.11 KiB) Viewed 40 times
A university is testing whether a new teaching methodology has made any difference in the overall performance of students in the final CGPA). According to the past university records the final CGPA of students fall into 8 groups (from poor to excellent) in the ratio 1:2:2:33:22:1. The university conducted a random survey of the final CGPA of students who who were taught in the new methodology and found the number of students in these groups to be 41, 91, 94, 147, 153, 106, 109 and 59 respectively. The value of the sample statistic (NOT its p-value) used to test whether there is any difference in the performance is 2.305 One possible correct answer is: 5.7 and the number of degrees of freedom of the distribution of the sample statistic is 17 One possible correct answer is: 7
A random variable X has the pdf f(x) = (1/a) x (1-a)/a for 0 < x < 1. (1 over a multiplied by x to the power of (1-a)/a, for x between 0 and 1) Find the estimator of the parameter a based on the following sample of size 5 using the method of moments. 0.3 0.6 1 1 0.7 Answer: 0.7 x X = E(X) – to → a- * - 1 The correct answer is: 0.3889