Answer:
59
Step-by-step explanation:
Answer:
620
Step-by-step explanation:
260400/(140+280)=620
Answer:
The test statistic | t | =4.45
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given that the first sample size n₁ = 36
Given that the second sample size n₂ = 34
Mean of the first sample x₁⁻ = 68.5
Mean of the second sample x₂⁻ = 70
<u><em>Step(ii):-</em></u>
Test statistic



The test statistic | t | = |-4.45| =4.45