
Now, we can just multiply it and obtain the result

I used law presented on this example
Answer:
21
Step-by-step explanation:
5×3=15
7×3=21
The answer is (3p-5pt)/12
remove parenthesis but the terms are connected.
Answer:
D. The standard deviation is known and n > 30.
Step-by-step explanation:
- Your sample size is greater than 30.
- Data points should be away from each other.
- Your data should be commonly categorized.
- Your data should be randomly picked from a population. Each item should have an equal chance of being selected.
- The sample sizes should be equal.