Answer:
$162
Step-by-step explanation:
$1200 x .045 = $54 x 3 years = $162
Answer:
He must survey 123 adults.
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 z-score that has a p-value of
.
The margin of error is:

Assume that a recent survey suggests that about 87% of adults have heard of the brand.
This means that 
90% confidence level
So
, z is the value of Z that has a p-value of
, so
.
How many adults must he survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage?
This is n for which M = 0.05. So






Rounding up:
He must survey 123 adults.
Moooooooosssssssssseeeeeeeeseseses
Answer:
0
Step-by-step explanation:
additive inverse means any number to make the sum zero. in this case 4 +(-4)=0
Answer:
The answer to your question is: Letter A
Step-by-step explanation:
Data
M (-6, 7)
E (4, 11)
r = 1 / 3
Formula


x = 
y = 