Answer:
-4
Step-by-step explanation:
you have to do -11+7
hope this helps dont 4get to like and star
-mercury
Answer:
Step-by-step explanation:
we have

we know that
The formula to solve a quadratic equation of the form
is equal to
in this problem we have

so
substitute in the formula
Answer: The 95% confidence interval will be wider.
Step-by-step explanation:
Confidence interval for population proportion is written as
Sample proportion ± margin of error
margin of error = z score × √pq/n
The z score is determined by the confidence level. The z score for a confidence level of 95% is higher than the z score for a confidence level of 90%
This means that with all other things being equal, a 95% confidence level will give a higher margin of error compared to a 90% confidence level.
The higher the margin of error, the wider the confidence interval. Therefore,
The 95% confidence interval will be wider.
$2+$1.29(30). Multiply $1.29 times 30, and you get 38.7. Add $2 on to this and you answer is 40.7