Question

For the formula $t= \frac{μ_1 - μ_2}{\sqrt {\frac{S_1^2}{n_1}+\frac{S_2^2}{n_2}}}$ consider of the following statements:
A. $μ_1$ and $μ_2$ are sample mean and population mean respectively.
B. $n_1$ and $n_2$ are sample sizes of two samples from same population.
C. $S_1$ and $S_2$ are sample means of two samples from same population.
D. $S_1$ and $S_2$ are standard error of two samples from same population.
E. $n_1$ is the sample size and $n_2$ is the population size.
Choose the correct answer from the options given below:

• A. B and D only
• B. A, B and D only
• C. B, C and D only
• D. A and E only

Answer 1

Answer: (A)

B and D only

Answer 2

The correct option is(A):B and D only