Answer:
The margin of error is of 0.1282 = 12.82%.
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 of:
A survey conducted by General Motors of 38 drivers in America, 34 indicated that they would prefer a car with a sunroof over one without.
This means that
99% confidence level
So , z is the value of Z that has a p-value of , so .
What is the margin of error?
The margin of error is of 0.1282 = 12.82%.
It should be 3)120 I tried to show the work best as possible just in case
24 is the simplified answer
Answer: x > 2
Step-by-step explanation:
First, you need to isolate the variable by subtracting each side by 15.
4x + 15 > 23
-15 -15
= 4x > 8
To get the value for the variable, divide each side by 4.
4x/4 = x 8/2 = 2
x>2
Answer:
Step-by-step explanation:
1) Split the second term in into two terms.
1- Multiply the coefficient of the first term by the constant term.
to -8 and multiply to -−20?
2 and −10
3 - Split -8x as the sum of 2x and -10x.
2) Factor out common terms in the first two terms, then in the last two terms.
3) Factor out the common term .
4) Solve for .
1 - Ask: When will (2x+1)(2x-5) equal zero?
When 2x + 1 = 0 or 2x - 5 = 0
2 - Solve each of the 2 equations above.