Is it like this?
y=-4+8
y=4
Is this what you need?
Answer:
<em>4</em><em>0</em><em>cm</em><em>.</em>
Step-by-step explanation:
<em>4</em><em>0</em><em>cm</em><em> </em><em>is</em><em> </em><em>t</em><em>he</em><em> </em><em>answer </em><em>.</em>
Answer:
the third one
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable
a. -94
Answer:
The 99% confidence interval for his expected proportion of the vote is (0.5516, 0.6336). Since the interval for the proportion is above 50%, he would be confident of winning based on the pool.
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 his expected proportion of the vote is (0.5516, 0.6336). Since the interval for the proportion is above 50%, he would be confident of winning based on the pool.