Answer:
x=6
Step-by-step explanation:
x-7=-1 add -1 to other side of the equation
x-6=0 add six to the zero
x=6
Suppose it is known that 23% of students at a certain college participate in a textbook recycling program each semester. Complete parts (a) and (b) below. a. If a random sample of 40 students is selected, do we expect that exactly 23% of the sample participates in the textbook recycling program? Why or why not? Choose the correct answer below. A. We expect that exactly 23% of the sample participates in the textbook recycling program, because that is the percentage of students that participate in the program regardless of sample or population size B. We expect that exactly 23% of the sample participates in the textbook recycling program, because a sample always has the same statistics as the population C. We do not expect that exactly 23% of the sample participates in the textbook recycling program. 23% is a population statistic and you cannot know anything about a sample from the population D. We do not expect that exactly 23% of the sample participates in the textbook recycling program. We do expect that the sample proportion will be close to the population proportion, but it will vary by the sample error from sample to sample b. Suppose we take a sample of 400 students and find the sample proportion participating in the recycling program. Which sample proportion do you think is more likely to be doser to 23% the proportion from a sample size of 40 or the proportion from a sample size of 400? Explain your reasoning. Choose the correct answer below A. The sample with size 40 will be closer to 23% because a smaller sample size has a smaller standard error B. The sample with size 400 will be closer to 23% because a larger sample size has a smaller standard error. C. The sample with size 400 will be closer to 23% because a larger sample size has more variation, D. The sample with size 40 wil be closer to 23% because a smaller sample size has loss variation
Answer:
D. We do not expect that exactly 23% of the sample participates in the textbook recycling program. We do expect that the sample proportion will be close to the population proportion, but it will vary by the sample error from sample to sample
B. The sample with size 400 will be closer to 23% because a larger sample size has a smaller standard error.
Step-by-step explanation:
The mean of sample can be estimated from the population. However, what we only get is the estimated mean of the sample which isn't the exact figure as that of the population. This slight variation in the mean value of the sample is due to sampling error.
According to the Central limit theorem, increasing the sample size yield a sample mean which continously converges to that of the population mean as the sampling error for such distribution drops lower and lower.
The true statements are:
D. We do not expect that exactly 23% of the sample participates in the textbook recycling program. We do expect that the sample proportion will be close to the population proportion, but it will vary by the sample error from sample to sample B. The sample with size 400 will be closer to 23% because a larger sample size has a smaller standard error.The given parameters are:
[tex]\mathbf{P(Recycling) = 23\%}[/tex]
This means that there is a 23% chance that a student in a college participates in textbook recycling
However, it does not mean that the probability is exactly 23% in a sample of 40 students.
This is so because, there may be error in the sampling of the population.
Hence, the true statement is (d)
According to central limit theorem, as the sample size increases, the sample error reduces.
This mean that the probability will be closer to 23% when the sample size increases to 400
Hence, the true statement is (b)
Read more about probability at:
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Need help ASAP
Question 2
jamie has 12 bags of candy. in each bag there is 1/4 lb of candy. how many pounds of candy does jamie have in all?
Teresa bought 11 pounds of sugar for $7.
How many dollars did she pay per pound of sugar?
Answer:
Its about 1.50$
Step-by-step explanation:
i don't know the exact amount
Graph y=5/3x-9
Please help ASAP
Answer:
1
Step-by-step explanation:
Please help me due soon.
Answer:
Step-by-step explanation:
Substitute in a= -2:
-13(-2) + 15(-2) - 4(-2)
And solve:
26 - 30 + 8 =
-4 + 8 =
4
Answer:
3a-2
Step-by-step explanation:
What does 3 to the power of 2 minus 4 times 2 plus 6
Answer:
7 is the answer
Step-by-step explanation:
Answer:
This equals 7
Step-by-step explanation:
I used a calculator
Can I have brainliest pls
write 401+402+403+404+405 in sigma notation
A movie theater offers many movie selections for its customers. The table below shows a summary of five movies currently offered and whether the movie is appropriate for children.
A 5-column table with 5 rows. Column 1 is labeled Title with entries The Davis Family, Hill House, Danger Zone, Mixed Bag, Closure. Column 2 is labeled Movie Type with entries comedy, drama, drama, comedy, drama. Column 3 is labeled length (minutes) with entries 92, 87, 123, 91, 100. Column 4 is labeled Critics' score with entries 78.2, 45.7, 56.0, 71.8, 67.2. Column 5 is labeled audience with entries adult, youth, adult, youth, adult.
What are the individuals in the data set?
movie titles
movie types
lengths
critics’ scores
Answer:
i think it's B: movie types
Tell me if i am wrong :/ :/
Helpshshdhdgdghseyeydgd
Answer:
To round 17.126 to the nearest tenth consider the hundredths’ value of 17.126, which is 2 and less than 5. Therefore, the tenths value of 17.126 remains 1.
17.126 rounded to the nearest tenth = 17.1
The following table contains starting numbers close to 17.126 rounded to the nearest 10th.
Find the area of each triangle o the nearest tenth.
Answer:
A is , 18.1058 B is , 24.91575
Step-by-step explanation:
PLEASE HELP 20 POINTS
1 Which parallelograms have congruent diagonals?
only squares
squares and rectangles
squares and rhombuses
squares, rectangles, and rhombuses
2. Which parallelograns have perpendicular diagonals?
only squares
squares and rectangles
squares and rhombuses
squares, recangles, and rhombuses
Answer:
1) squares and rectangles
2) squares and rhombuses
please help me w this lol i dont get it
Answer:
i don't get u
Step-by-step explanation:
In terms of π, what is the area of the circle? A) 25π cm2 B) 100π ft2 C) 625π cm2 D) 1000π cm2
9514 1404 393
Answer:
C) 625π cm^2
Step-by-step explanation:
The area of a circle is given by ...
A = πr²
where r is the radius. The radius is half the diameter, so is 25 cm. The area is ...
A = π(25 cm)² = 625π cm²
can someone help me with this
Answer
So if you want to get the area of a parallelogram you should do length x width
So 3.7 x 12.5= 46.25
I’m sorry if this is a wrong answer but this is what the teacher told us
I NEED HELP ON A PROBLEM FAST!!
Answer:
The answer is the second one , i mean 4.096 cm^3
Find the radius of a circle in which the central angle, a, intercepts an arc of the given length
a = 30°, s = 9in
Answer:
17.2 in
Step-by-step explanation:
The formula for arc length is s = rФ. Here we are to find r. Solving this formula for r, we get:
r = s/Ф
So, in this problem, r = (9 in) / (π/6) = 54/π in ≈ 17.2 in
Can someone help me plz? I’ll reward points + brainalist
Answer:for the first one I’m unsure but think it’s b and for the second one its 38 inches
Step-by-step explanation:
The radius is just half the circumference
Please Help!!! I'll Give Best And Brainliest if it lets me!
Answer:
6
Step-by-step explanation:
this is the answer. have a great day.
For 120 consecutive days, a process engineer has measured the temperature of champagne bottles as they are made ready for serving. Each day, she took a sample of 8 bottles. The average across all 960 bottles (120 days, 8 bottles per day) was 46 degrees Fahrenheit. The standard deviation across all bottles was 0.8 degrees Fahrenheit. what would be the center line
Answer:
46° Fahrenheit
Step-by-step explanation:
Center line can be said to be the X double bar. X double bar is the average value we have across all components we're considering. In this question, the X double bar is already given as 960 bottles (if you multiply 120 days by 8 bottles per day) and that it is 46 degrees Fahrenheit.
As such, there exist no reason to want to or have to solve for anything since it's already given.
Therefore the Centre line is 46 degrees Fahrenheit, same as what is given in the question.
Two brothers have a total age of 28 if one brother is older by 20 years how old is the second brother
Answer:
8
Step-by-step explanation:
Total meaning addition, you would use the opposite operation to find the answer.
28 - 20 = 8
And to check your work you would add;
20 + 8 = 28
which is the brothers total combined age.
Answer:
8
Step-by-step explanation:
three times the sum of 14 and number (x).
Answer:
3 * 14+x
Step-by-step explanation:
* is an multiplication sign
Hey there!
Your answer is 3(14 + x)
"Three times the" represents multiplying by 3. "the sum of 14 and a number (x)" represents 14 + x, therefore we get 3(14 + x).
Have a terrificly amazing day! :D
I'm terrible at fractions I need help
Answer:
4/5
Step-by-step explanation:
okay so for the 3 and for its 3 to the 4th power btw
3^4+ 2 ⋅ 5 = ____. (Input whole numbers only.)
Answer:
91
Step-by-step explanation:
3^4 +2 * 5
Using PEMDAS, first we will calculate the exponent.
3^4 = 81
81 +2 *5
Using PEMDAS again, now we will multiply.
2*5 = 10
81+10
=91
Use the data on the dot plot to answer the question.
Answer:
5
Step-by-step explanation:
x < 7
Which means 6 and below
only 5 people slept for less than 7 hours
Answer:
5 people
Step-by-step explanation:
Cuz you have to look what’s to the left of 7 and count the dots in 5 and 6
Please round to nearest hundredth and give explanation.
Answer:
I think PR = 20 but I'm not sure
Please I need help really fast
Answer: 30 degrees
Step-by-step explanation:
The total is 180 degrees.
there is a right angle on the left. A right angle is 90 degrees.
180 - 90 = 90
There is still 90 degrees left, meaning that the right side is a total of 90 degrees.
2x + x = 3x
x = 90/3
x = 30
Therefore,
x = 30 degrees!
Hope it helped!
If the manager sold 15 corn dogs, how would this quantity be represented in her table?
Answer:
Not enough information.
Step-by-step explanation:
What kind of table do you want.
Answer:
I had the same question, it would be -15 because in the video on the assignment it says the answers are the opposite.
Step-by-step explanation:
area of the algebra tiles as a sum
A can of paint is a right circular cylinder. The radius of the base is 5 centimeters and the height is 12 centimeters. Find the number of cubic centimeters of paint, in terms of π, contained in a full container.
Answer:
The answer is 300
The number of cubic centimeters of paint contained in the full jar container is n = 300 and the volume is V = 300π cm³
What is a Cylinder?A cylinder is a three-dimensional shape consisting of two parallel circular bases, joined by a curved surface. The center of the circular bases overlaps each other to form a right cylinder. The volume of a cylinder is
Volume of Cylinder = πr²h
Surface area of cylinder = 2πr ( r + h )
where r is the radius of the cylinder
h is the height of the cylinder
Given data ,
The volume of a right circular cylinder can be calculated using the formula:
V = πr²h
where V is the volume, r is the radius of the base, and h is the height.
Substituting the given values, we have:
V = π(5 cm)²(12 cm)
V = π(25 cm²)(12 cm)
V = 300π cm³
Hence , a full container of paint contains 300π cubic centimeters of paint.
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