Answer:

Step-by-step explanation:
H0: µ1 – µ2 = 0
HA: µ1 – µ2 ≠ 0
We have given,
The population variances are not known and cannot be assumed equal.
The test statistic for the test is

Where,
= sample meaan of population 1
= sample mean of population 2
= sample size of population 1
= sample size of population 2
Therefore, this is the test

Answer:
A is the answer
Step-by-step explanation:
m¹⁶/4n¹²
The answer is C that is X=27
view the picture for step by step solution
Answer:
152
Step-by-step explanation:
6840 divided by 45 is 152