Answer: The test statistic is t= -0.90.
Step-by-step explanation:
Since we have given that
n₁ = 50
n₂ = 25

So, s would be

So, the value of test statistic would be

Hence, the test statistic is t= -0.90.
Is one of the answer choices no solution because that’s what I got.
This is supposed to be a question…????
Answer:
For 7a its C i think And for 7b is 3:2
Step-by-step explanation:
hope this helps