Answer:
5 9/14
Step-by-step explanation:
Your equation is correct.

Answer: Choice A) A true null hypothesis is rejected
In other words, if the reality is that the null is true but your research says otherwise, then you've committed a type i error.
A type ii error is when you fail to reject the null (basically "accepting" the null) while in reality the alternative is the true hypothesis.
Answer:
Answer D: 12
Step-by-step explanation:
Three distinct denominators are shown here: 4, 3 and 2. The LCD is 12.
This corresponds to answer D.