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.
<span>(5a^2-4)*(25a^4+20a^2+16) is your answer</span>
19.95x + 9.95y <== ur answer