Answer:
90% confidence interval -> {0.4529, 0.5871}
Step-by-step explanation:
Check conditions for a 1-proportion z-interval:
np>10 -> 150(0.52)>10 -> 78>10 √
n(1-p)>10 -> 150(1-0.52)>10 -> 72>10 √
Random sample √
n>30 √
For a 90% confidence interval, the critical value is z=1.645
The formula for a confidence interval is:
CI = p ± z√[p(1-p)/n]
Given:
p = 78/150 = 0.52
n = 150
z = 1.645
Therefore, the 90% confidence interval is:
CI = 0.52 ± 1.645√[0.52(1-0.52)/150] = {0.4529, 0.5871}
Context: We are 90% confident that the true proportion of all voters who
plan to vote for the incumbent candidate is contained within the interval
This is not a test but pls help
Answer:
7 x 2 x 6 is the same as 2 x 7 x 6
Step-by-step explanation:
two squares of the side 10 cm were joined together to form a rectangle. Calculate the perimeter of the rectangle.
Answer:
Step-by-step explanation:
If they were joined together, wouldn't the length of both squares combined be 20cm?
Therefore, it'd be (10+20+10+20) for the perimeter.
60cm.
Solve the system of equations using linear combination. -4x+y=10 -2x-y=-1
Answer: look at the picture
Step-by-step explanation: Hope this help :D
Which expression can go in the blank to make this equation true
-4.5 + 4.4 + ? = 0
Answer:
+ 0.1
Step-by-step explanation:
So, first, we will add together -4.5 + 4.4, which equals -0.1. Then, we need to add the positive value of that to make it 0, so we add 0.1. I Hope This Helps :)
someone please answer this
Answer:
9.4m is the answer.
Step-by-step explanation:
a = 8m
b = 5m
c = ?
According to the Pythagoras theorem,
a² + b² = c²
8² + 5² = c²
64 + 25 = c²
89 = c²
c = 9.433
Rounding off,
c = 9.4m
Write the number as a percent.
3/20
Answer:
15%
Step-by-step explanation:
not that hard just make it a decimal then at the point go back twice and there its 15%
Answer:
15%
Step-by-step explanation:
Since 100 isn't the denominator we need to make it a denominator.
3/20 x 1/5 = 3/100 we need to do the same to the denominator because whatever we do to the denominator has to do with the numerator 3 x 5 = 15,
15/100 means 15%!
Will GiVE BRAINLIEST!!!!
A carpenter uses two different types of paint in his work, X-Brand and Y-Brand (represented by the x and y variables respectively in the system of equations below). The system of equations represents the total cost and amount of paint he purchased for a client. Determine the cost, in dollars, of the X-Brand.
2x+5y=6
−x+2y=−3
Answer
$3
Step-by-step explanation:
To find the x value, you want to cancel out the y terms in the equations. To do so, multiply (2x+5y=6) by 2, and (-x+2y=-3) by -5. This gives you
4x+10y=12
5x-10y=15
You can then cancel out the y terms and add the other terms from the 2 equations together to make
9x=27
You then divide 27 by 9 to get 3 as the value for x.
what is 2,0000 time 3,000000 =
Answer:
60,000,000,000
Step-by-step explanation:
You can add the zeros and multiply 3 x 2 which is 6 then add the zeros in both numbers.
the coma is misplaced to it's
20,000 x 3,000,000 = 60,000,000,000
Answer:
60,000,000,000
Step-by-step explanation:
You can add the zeros and multiply 3 x 2 which is 6 then add the zeros in both numbers.
the coma is misplaced to it's
20,000 x 3,000,000 = 60,000,000,000
Step-by-step explanation:
What does ABCD : EFGH mean?
I'm asking about this thing ( : ), not the letters. Does it mean equal to?
The colon is the symbol ":". It is used in a number of different ways in mathematics. 1. To denote ratio or odds, as in 2:1 (voiced "two to one").
Do this help?
10. What is the simplified fraction of 4/16
Answer:
1/4
Step-by-step explanation:
1. 4/16
2. 2/8
3. 1/4
Answer:
1/4
Step-by-step explanation:
Here is why:
When dividing both sides by 4 you will get 1 on the top and 4 on the bottom!
Any Questions?
help math see image for question
Answer:
AAAAAAA!!!!!
Step-by-step explanation:
Explain what median is and how to solve for it
Answer: See below
Step-by-step explanation:
Median is the value that separates the higher data and lower data. In simple terms, it is the "middle" value of the whole set of data. There are two different ways to solve for the median.
1. If the data set has an odd number of values, line the values up in increasing order. Then the value or number that lies in the middle will be the median.
For example, if we are given a data set {1, 3, 4, 2, 5}. First, we line them up by increasing order, which becomes {1, 2, 3, 4, 5}. Since it is an odd number set, we can directly get the median which is 3.2. If the data set has an even number of values, line the values up in increasing order. Then there will be two number that lies in the "middle" together. We add them up and divide them by 2. The average of the two numbers will be the median of the set.
For example, if we are given a data set {2, 6, 4, 10, 8, 12}. First, we line them up by increasing order, which becomes {2, 4, 6, 8, 10, 12}. Since it is an even number set, we get our median from the two numbers in the middle, which are {6, 8}. We add them together to get 14 and then divide by 2 which is 7. So the median will be 7.Hope this helps!! :)
Please let me know if you have any questions.
please help please help please PLZZZ HELP
QUESTION:Find the slope between the 2 points (rise/run)
What is the y-intercept
Write the equation in y=mx+b
Answer:
The y-intercept is -4
y= -2/3 + (-4)
Can somebody please help me with this question
Answer:
35?
Step-by-step explanation:
Answer:
Step-by-step explanation:
I don't have the exact answer I just know it's going to be wayy less than 90 degrees, and probably like around 30 or even less.
What is the surface area of the triangular prism?
Answer:
The answer is 168!
Step-by-step explanation:
6*4=24 (There are two triangles so you don't have to divide by 2, 24 is simply the answer to both), 6*9=54, 5*9*2=90, 90+54+24=168! I hope this helps! Have a great rest of your day!
Answer:
A≈114.12
Step-by-step explanation:
A=2AB+(a+b+c)h AB=s(s﹣a)(s﹣b)(s﹣c)
s=a+b+c/2
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=9·5+6·5+4·5+1
2·﹣94+2·(9·6)2+2·(9·4)2﹣64+2·(6·4)2﹣44≈114.12459
here is the full explanation , I took a blackboard pavcs math quiz
There are currently 3 people signed up for the debate club. The school will not recognize the club officially until it has more than 5 members.
Which of the following graphs includes the possible values for the number of people who still need to sign up to make the club "official?" (4 points)
Group of answer choices
Number line with closed circle on 2 and shading to the right.
Number line with open circle on 2 and shading to the left.
Number line with open circle on 2 and shading to the right.
Number line with closed circle on 2 and shading to the left.
Answer: The 3rd answer
Step-by-step explanation:
Since there is already 3 people in the club all you need is something greater than 2 so answer number 3 is the correct one since it says greater then 2.
Hope this helped! :)
Which equation is written in slope-intercept form?
y = 3x-2
X=1/2y+8
2x + 5y = 12
Зу = 8x - 5
can you please help me out if you know this answer
Step-by-step explanation:
A strike in bowling meant all 10 pins knocked down.
In this case, there is only 1 strike
True or false: In order to fill this figure with units cubes, you would need to fill in 7 cubes in length, 10 cubes in height, and 3 cubes in width. Then, you would fill the reset of the space with cubes
Answer:
true
Step-by-step explanation:
Answer:
True
Step-by-step explanation:
I took the test.
Brainliest please
Someone please answer this!!
what is the absolute value of 1,123?
Answer:
1,123 is the absolute value because it is a positive integer hence it reaches the positive absolute value
Answer:
the correct answer is 1,123
Step-by-step explanation:
absolute value is the non-negative value of a real number, without regard to its sign. which means [1,123]= 1,123
Use PEMDAS to evaluate the expression 24 ÷ 3 + 6 x 4 − 11. 19 21 22 24
asap
Answer:
The answer is 21 if you use PEMDAS.
Answer:
21
Step-by-step explanation:
PEMDAS= Parenthesis Exponents Multiplication Division Addition Subtraction
Hope this helps! have a great day!
What is the exact value of sin(345degree)?
Answer:
Step by-step explanation:
cos(90-345)
cos(-255)
I know it doesnt match exactly, but it should give you what you need in toder to get the right answer. Hope this helps!
pls help with this geomtry question asap
Mr Lim, who is in Singapore, wants to make a phone call to his client in
Chicago. The local time in Chicago is 14 h behind the local time in Singapore.
If Mr Lim wants to call his client at 7 a.m. (Chicago local time), at what time
(Singapore local time) must he make the call?
Answer:
5pm
........................
Mr. Lim has to make calls at 5:00 pm if he wants to talk with his client at 7:00 AM in Chicago due to the different time zone.
What are Time Zones?A time zone is any place that observes the same standard time. For current time zones around the world, see the interactive Time Zone Map.
Given, Mr. Lim, who is in Singapore, wants to make a phone call to his client in Chicago. The local time in Chicago is 14 h behind the local time in Singapore. If Mr. Lim wants to call his client at 7 a.m. (Chicago local time)
Since there is a time difference between the two countries. Mr. Lim has to make calls 14 hours before as per the local time zone
14 hours before 7 AM is 5: 00 PM.
Therefore, Due to the time difference, Mr. Lim must make calls at 5:00 p.m. if he wishes to speak with his client at 7:00 a.m. in Chicago.
Learn more about time zones here:
https://brainly.com/question/3818424
#SPJ2
863 to the nearest 100
Answer
the correct answer is 900
Pls someone help me with this question pls
Answer:
9/11
Step-by-step explanation:
9/11
. A piece of molding is 12 3/4 feet long. How many 2 1/8-foot pieces can be cut from the this piece of molding? *
Answer:
6
Step-by-step explanation:
12 divided by 6 is 2. 3/4 divided by 6 is 1/8 because 1/4 equals to 2/8. 3/4 quals to 6/8. I'm also not sure if what I said sounded correct.
Please help me with this ASAP ASAP please please help
9514 1404 393
Answer:
h = 7 in
LA = 42π in²
SA = 60π in²
Step-by-step explanation:
Use the appropriate formula with the numbers you know, and solve for the number you need to know.
V = πr²h
h = V/(πr²) = (63π in³)/(π(3 in)²)
h = 7 in
__
LA = 2πrh
LA = 2π(3 in)(7 in)
LA = 42π in²
__
SA = 2πr(r +h)
SA = 2π(3 in)(3 in +7 in)
SA = 60π in²
a pool only open when the temperature is at least 72 degrees. Which inequality represents the temperature t, when the pool is open?
Answer:
t ≥ 72
Step-by-step explanation:
The pool has to be at least 72° or MORE to open, so we are going to have a greater sign with an equal sign under indicating that the temperature has to at least be 72° or be greater than 72°. (≥)