9 would be the right answer because -3 ^2 is 6 and 6 times 2 is 12 plus -3 is 9. so 9 is your final answer
Answer:
-1.001
Step-by-step explanation:
Answer:
Margin of error in 95% confidence level is 9,05 IQ points.
Step-by-step explanation:
margin of error (ME) around the mean using the formula
ME=
where
- z is the corresponding statistic in the given confidence level(z-score or t-score)
- s is the standard deviation of the sample(or of the population if it is known)
Population standard deviation of IQ scores for all children with this particular type of learning disorder is assumed 15.
If the empirical rule is used, 95% confidence interval is 2 standard deviations around the mean. If we use the formula:
ME=
≈ 9,05