9. 5y
10. 102 square-4
11. 2a5 square +5b
12. 8m+2+4n
Answer:
The margin of error for the 99% confidence level for this sample is ±2.23.
None of the given figures is close to the answer:
E. None of the above
Step-by-step explanation:
margin of error (ME) around the mean can be calculated using the formula
ME=
where
- z is the corresponding statistic of the 99% confidence level (2.576)
- s is the population IQ standard deviation (15)
- N is the sample size (300)
Using these numbers we get:
ME=
≈ 2.23
Answer:
A
Step-by-step explanation:
Use a calculator called symbolab.com 0-0
Answer:
slope is 4
Step-by-step explanation: