Answer:
The confidence limits for the proportion that plan to vote for the Democratic incumbent are 0.725 and 0.775.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
Of the 500 surveyed, 350 said they were going to vote for the Democratic incumbent.
This means that [tex]n = 500, \pi = \frac{350}{500} = 0.75[/tex]
80% confidence level
So [tex]\alpha = 0.2[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.2}{2} = 0.9[/tex], so [tex]Z = 1.28[/tex].
The lower limit of this interval is:
[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.75 - 1.28\sqrt{\frac{0.75*0.25}{500}} = 0.725[/tex]
The upper limit of this interval is:
[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.75 + 1.28\sqrt{\frac{0.75*0.25}{500}} = 0.775[/tex]
The confidence limits for the proportion that plan to vote for the Democratic incumbent are 0.725 and 0.775.
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what is this bro :))))))))))))?
Answer:
what's your questions
Step-by-step explanation:
please give me brain list and follow
Find the distance between a and b.
a = 9.21, b = –5.51
Answer:
9.21 - (-5.51)
9.21 + 5.51 = 14.72
The distance is 14.72
Step-by-step explanation:
Henry earned $558.40 for working 32 hours. What is Henry's hourly
wage? Round to the nearest cent.
Answer:
18.64 is the answer
2m = 82
Question Options:
add 2; m = 41
subtract 2, m = 41
multiply by 2; m = 41
divide by 2; m = 41
Answer:
Step-by-step explanation:
2m = 82
m = 41
divide by 2
answer is D
Answer:
divide by 2; m = 41
Step-by-step explanation:
divide by 2; m = 41
According to PEMDAS you have to divide
GIVING OUT BRAINLIST QUICK! I CAN ONLY GIVE BRAINLIST IF 2 PEOPLE ANSWER!
Answer: 7 i think
Step-by-step explanation:
Answer: Octagon & 6.2
Step-by-step explanation:
octagons have 8 sides and 3.1 x 4 = 12.4 divided by 2 = 6.2
a Carver begins work on the following block of granite that weighs 2700g what is the density of the granite
Density" of the given granite block is 2.7g/cm
3
.
Explanation:
Density of an object is defined as the mass occupied per unit volume. “Density” is represented by “ρ”. Mathematically, \rho=\frac{m}{v}ρ=
v
m
where, “m" mass of an object and "v" is volume of an object.
Given that,
Dimensions of the block are 20 cm, 5 cm and 10 cm.
\text { Volume of the block is } l \times b \times h Volume of the block is l×b×h
\text { Volume of the block is } 20 \times 5 \times 10 Volume of the block is 20×5×10
\text { Volume of the block is } 1000 \mathrm{cm}^{3} \text { . } Volume of the block is 1000cm
3
.
Mass of the block is 2700 g.
Substitute the given values in \rho=\frac{m}{v}ρ=
v
m
to find density of a block.
\rho=\frac{2700}{1000}ρ=
1000
2700
\rho=2.7 \mathrm{g} / \mathrm{cm}^{3}ρ=2.7g/cm
3
\text { "Density" of the given granite block is } 2.7 \mathrm{g} / \mathrm{cm}^{3} "Density" of the given granite block is 2.7g/cm
3
2√63
Simplify
Bsbahajjssjjxjsjsjj
The main office staff collected 55 cans, the counseling staff collected 89 cans, and the custodial staff collected 67 cans.
The base of a pyramid is a triangle with a base of 28 inches and a height of 21 inches. Determine the volume of the pyramid, if its height is 68 inches.
A) 3,528 cubic inches
B) 19,992 cubic inches
C) 13,328 cubic inches
D) 6,664 cubic inches
I just randomly guessed but could someone help plz-
Y=2
2x+y=8
Answer:
A (3,2)
Step-by-step explanation:
2x +2 = 8
2x = 6
x = 3
Answer:
(3,2)
Step-by-step explanation:
Question 3 (1 point)
(07.07)
Find the product of (x + 5)2. (1 point)
O a
x2 - 10x + 25
Ob
x² – 25
Oc
x2 + 25
Od
x2 + 10x + 25
what is the surface area of the rectangle prism below? HELP ME ASAP PLEASE !!
Answer:
C. 248
Step-by-step explanation:
[tex]A=2(wl+hl+hw)\\2(4*6+10*6+10*4)\\2(24+60+40)\\48+120+80=248[/tex]
To investigate housing needs in the future, a town planning committee
created a model to help predict the growth of the population of the town. The
data are shown in the table.
Answer:
P(t) = 5.24(1.030)^t
Step-by-step explanation:
The model for P(t) , the population of the town, t years after 1985, best fits the data is option C. P(t) = 5.35 (1.029)^t.
What is Population Growth?Population growth is defined as the increase in the number of people which is calculated using population growth rate.
Population growth is an exponential function.
So, the function will be of the form,
P(t) = a (b)^t
Initial population is the population in 1985.
P(0) = a (b)⁰ = 5.35
⇒ a × 1 = 5.35 (Since any number raised to 0 is 1)
⇒ a = 5.35
Population in 1990, that is after 5 years is,
P(5) = a (b)⁵ = 6.01
⇒ 5.35 (b)⁵ = 6.01
⇒ (b)⁵ = 1.123
⇒ b = 1.024
So the function which best models is P(t) = 5.35 (1.029)^t.
Hence the function is C. P(t) = 5.35 (1.029)^t.
Learn more about population Growth here :
https://brainly.com/question/12228859
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Your question is incomplete. The complete question is given in the image below.
trigonometry find the missing side
Step-by-step explanation:
griminology is one of part of body
Select the statement that describes this expression: 5 x (3 + 4) − 4.
5 times the sum of 3 and 4, then subtract 4
5 times 3 plus 4 minus 4
5 more than the sum of 3 and 4, and then subtract 4
5 times 3 plus the difference of 3 and 4
will give branlist
Answer:
5 times the sum of 3 and 4, then subtract 4
Step-by-step explanation:
simplify your math.
5(7)-4
35-4
31
Which of the following shows the factored form of x2 + 7x – 8?
Answer:
Step-by-step explanation:
Go to algebra calculator it will show the answer.
Answer:
(x-1) (x+8)
Step-by-step explanation:
If you factor this question out correctly, you would get the answer above.
PLS HELP AND ANSWER QUICK PLZ
63°
Step-by-step explanation:
my answer got deleted sorry!
Which of the following is NOT equivalent to (3x – 12)(x + 4)?
3(x2 – 8x + 16)
3(x2 - 16
3x2 - 48
3x(x + 4) – 12(x + 4)
Answer:
3x^{2}+12x-12x-48
3x^{2}-48
Step-by-step explanation:
I hope this answer has helped you
The given factor (3x – 12)(x + 4) is not equivalent to the 3(x2 – 8x + 16) hence, correct option is (A).
What is an algebraic factor?An algebraic factor is the multiplication of two algebraic terms.
That term could be in form of summation multiplication or in subtraction.
The root of the quadratic equation formed by the algebraic factor is always real.
If we divide algebraic factor by a factor which is available inside then the remainder after the division will be zero.
Given that equation
(3x – 12)(x + 4)
⇒ 3x² + 12x - 12x - 48
⇒ 3x² - 48.
Now by option cross-checking
In option (A)
3(x² – 8x + 16)
⇒ 3x² - 24x + 48 which is not equal to the (3x – 12)(x + 4).
Hence correct option will be 3x² - 24x + 48.
For more about the algebraic factor
https://brainly.com/question/19426180
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Answer this correctly and I will give u brainslist and this is worth 15 points
The answer is A) 60°
Step-by-step explanation:
It's reflecting
Joyce determines that 30% of her monthly income goes for rent. If her monthly income is $2,009, about how much is her monthly rent? How much is her yearly rent?
Answer:
602.7
7,232.4
Step-by-step explanation:
2009 x 0.30 = 602.7
602.7 x 12 = 7232.4
Need help plzzzzzzz!!!!
Answer:
there is no image
Step-by-step explanation:
This to me makes no sense but i wanna see if people know this +100 point question;
FOLLOW THE CORRECT STATEMENT, IN ORDER
please figure out how to do the problem bellow, and go below the project and see until the 8th ppi.
The following 8x8-1+9-90+1000-00.89=______? THIS ANSWER IS REQUIRED*
Take the following answer above and figure out the question; _____+4005-00000.98- 400+1=___?
Answer:
981.11
981.11+4005-00000.98- 400+1=4586.13
Step-by-step explanation:
Just order of operations
Hope this helps!
Answer:
981.11
Step-by-step explanation:
Find the area of the figure below.
Answer:
153.86
Step-by-step explanation:
Karla says following table represents a function,but Robert does not agree Who is correct
Would you rather, $20 off your entire purchase or 20% off your entire purchase?
(I need at least 2 good reasons why, please help!) < 3
Answer:
i personally would much rather have $20 off, because as the price goes up the less money you get off of the total price. but with $20 off, youre automatically getting $20 off. if you were to get %20 off of something that is $50, youd only get about $10 off, but if you used the $20 off coupon, you would get $20. which would be much better. so instead of partially getting some of it off, you can get a much larger amount off
d - 41 = 19
Choose the answer that shows what to do in the process step, and what the solution (answer is).
Question Options:
add 41; d = 60
subtract 41; d = 60
multiply by 41; d = 60
divide by 41; d = 60
Answer:
see explanation
Step-by-step explanation:
add 41; d = 60
The point (3, −5) is reflected over the x-axis. What are the coordinates of the new point? Group of answer choices
(3,5) is the answer i think
hope it helpss
answer dis please ill give brainliest
Answer:
A= 81
------------
Hope this helps :)
Looking for some help!
Please only answer if you know the answer, the comment section is right below. Please don't waste my points!
Also, please show all of your work, you are trying to help me better understand the concept, not just give me the answer.
The image is down below. Show work! Thanks!
Answer:
5√216Step-by-step explanation:
Use the property of 45 degree right triangles
c = a√2, where c- hypotenuse, a = legsTop diagram
x = 5√2Bottom diagram
x = 8√2(√2) = 16Bryan has a collection of baseball cards which he shares equally with his brother, Jude. Bryan also received two cards from his friend, Gene. If Bryan has 8 baseball cards now, how many cards did he originally have in his collection?
Answer:
X= 7
Step-by-step explanation: