Answer:
4 and -18
Step-by-step explanation:
Answer:
The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.

In which
z is the zscore that has a pvalue of
.
For this problem, we have that:

99% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:

The upper limit of this interval is:

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..
Answer:
Transitive property
But it looks like substitution.
Step-by-step explanation:
Answer:
According to the given problems the one that gets closer is the first option. ^12sqrt27/2
Step-by-step explanation:
<em>Simplify the radical by breaking the radicand up into a product of known factors.</em>
The answer for the first question is 12
√
27
/ 2
You do 6/4, so the answer should be: 1.5 hours!