Which of the following statements are TRUE with respect to the application of t-distribution for testing of Hypothesis
A. It is a Non-parametric test
B. It tests whether sample mean differs significantly from the population mean
C. It tests the significance of an observed correlation coefficient
D. It tests the significance of an observed covariation
E. It tests the significance of an observed regression coefficient
Choose the most appropriate answer from the options given below:
1
A and E Only
2
B and D Only
3
B, D and E Only
4
B, C and E Only