Suppose we have a list of the heights of all students at DCC. Each of the 250 people taking statistics randomly selects a sample of 40 DCC student heights, and then each of those 250 people constructs a 95% confidence interval for the mean height of all students at DCC. Which of the following statements about the confidence intervals is most accurate?

a. About 95% of the heights of all students at the college will be contained in these interval
b. About 95% of the time, a studentâs sample mean height will be contained in his or her interval.
c. About 95% of the intervals will contain the population mean height.
d. About 95% of the intervals will be identical.

Answers

Answer 1

Answer:

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Related Questions

What is the length of the side of a cone if the radius of the base is 12 and the height is 20 URGENT IMPORTANT P.S. THIS IS NOT COLLEGE MATH

Answers

Answer:

l=r2+h2=122+202≈23.32381

Step-by-step explanation:

If you've driven at a consistent speed of 60 mph how much would you have traveled in 2 hours?

Answers

Answer:

120 Miles

Step-by-step explanation:

60 miles x 2 hours = 120 miles

Answer:

[tex]120[/tex]

Step-by-step explanation:

If you've driven 60 mile per hour, you'll have to find how many miles you can drive in two hours. To find this, you will have to multiply the miles by 2 hours. You can also add 60 miles with another 60 miles to find your answer.

[tex]60*2=120[/tex]

[tex]60+60=120[/tex]

So you've driven 120 miles per hour.

Coin Calculation plz help

Answers

Answer:

You didnt add a question, file or possible answer choices

What is the volume of the rectangular prism?

Answers

Answer:

7m^3

Hope you have a good day lad!

A teacher buys packs of notebooks to give to his students. The ratio of gold notebooks to red notebooks is represented in the tape diagram.

Answers

Answer:

40 gold notebooks

Step-by-step explanation:

5:3 gold notebooks to red notebooks so using this we can set up a proportion

5 x

-- = ---

3 24

cross multiplying

3x = 120

x= 40

so there are 40 gold notebooks if there are 24 red notebooks

Answer: Answer above is right. Kudo's to him

Step-by-step explanation:


2, 8, 14, 20, ...
O Arithmetic
O Geometric
O Neither

Answers

Arithmetic
That is the study of sequences of numbers

Kendall worked 25.5 hours one week.
If he earns $12.50 per hour, how
much did he earn that week? How did
you know where to put the decimal
point?

Answers

$318.75

multiply 25.5 by 12.5 which equals 318.75.

to know where to put the decimal, you count the numbers to the right of the decimal point. in this equation youre multiplying 25.5 and 12.5. there are 2 numbers to the right of the equation so in your answer, there should be 2 numbers to the right of the decimal.

which of the following is the equivalent to the radical expression below when x> 0

square foot 12x^3 + Square root 6x

Answers

Answer:

i think it is b

Step-by-step explanation:

The equivalent to the radical expression will be x√2. Then the correct option is C.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The expression is given below.

⇒ √(12x³) ÷ √(6x)

Simplify the expression, then we have

⇒ √(12x³) ÷ √(6x)

⇒ √(12x³ ÷ 6x)

⇒ √(2x²)

⇒ x√2

The comparable to the extreme articulation will be x√2. Then the right choice is C.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

Simplify the expression using the distributive property:

12 (2x + 4)

Answers

Answer:

24x + 48

Step-by-step explanation:

12(2x) + 12(4) = 24x + 48

Answer:

24x + 48

Step-by-step explanation:

dont feel like explaining sorry

g(x) = -4x+4
h(x)= x³+4x²
find g(x)•h(x)

Answers

Answer:

4x^4-12x^3+16x^2

Step-by-step explanation:

(-4x+4)(x^3+4x^2)

a      b    c      d

using foil method multiply

term a by term c and d

-4x * x^3= -4x^4

-4x * 4x^2= -16x^3

*dont forget to add the exponents, when x is by itself you it always has an imaginary 1

then multiply term b by term c and d

4 * x^3= 4x^3

4 * 4x^2= 16x^2

line up all of your answers from biggest exponent to smallest

-4x^4-16x^3+4x^3+16x^2

we can combine like terms with -16x^3 and 4x^3 becaus ethey have the same exponent value

4x^4-12x^3+16x^2

15. Find the area of the circle. Use 3.14 as pie. Round to the nearest tenth. Include units. The radius is 4 inches.

Answers

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Answer: 50.24

Explanation:

3.14(4)^2 = 50.24

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer:  A=50.2

Step-by-step explanation:

using 3.14 as pie...

A=3.14[tex]r^{2}[/tex]

A=3.14x[tex]4^{2}[/tex]

A=3.14x16

A=50.24

rounding to nearest tenth..

A=50.2

A bag contains 7 blue, 4 yellow, 4 green, and 5 red marbles. Find the probability of choosing a green marble without looking. Mark only one oval. Dood​

Answers

Answer:

1/4

Step-by-step explanation:

total balls=7+4+4+5=20

probability of green marble=?

green marbles are 5 so,

       Probability=number of favourable outcomes / number of all possible outcomes

   total outcomes=20

green ball chances=5

       =5/20

          =1/4

Yo please help I’ll mark you brainliest

Answers

Answer:

1116units²

Step-by-step explanation:

area of trapezium= (a+b)h all over 2

a=38

b=55

h=24

area= (38+55)*24 allover 2

area= 1116units²

Michaels front door has a permit perimeter of 26 feet the width of the doors 4 feet what is the length of the door

Answers

Answer:

I'm pretty sure it's 9. Hope this helps!:)

The given data set shows the distance traveled, in miles, by customers to a bookstore event to meet their favorite author.

40, 35, 44, 90, 23, 25, 28, 35

Which data value is considered an outlier?

Answers

Answer:

90

Step-by-step explanation:

It is a large distance compared to the others

Answer:

90

Step-by-step explanation:

I took the k12 quiz, hope this helps. :)

A woman bought some large frames for $13 each and some small frames for $6 each at a closeout sale. If she bought 18 frames for $136, find how many of each type
she bought
She bought large frames
vie

Answers

Answer:

she bought 4 large frames and 14 small frames!

Step-by-step explanation:

This is a system of equation problem!

let's say that x= large frames and y=small frames.

since there's 18 total, we already have our first equation set.

x+y=18

(number of large frames) + (number of small frames)= 18

13x would represent the large frames because each one is 13 dollars.

6y would represent the small frames because each one is 6 dollars.

Since she paid 136 dollars total, we can already tell that

13x+6y=136

(price of large frames*number of large frames) + (price of small frames*number of small frames)=136.

Now, time for the math!

Attached below is how you would work it out using substitution.

Hope this helps!

x=4 and y=14

Meaning that she bought 4 large frames and 14 small frames!

a contractor was paving a driveway he mixed 4/7 ton lf sand and 1/3 ton of concrete how much did the mixture weigh

Answers

Answer: 19/21

Step-by-step explanation: find the same multiple for both so you can combine them

Katya went to a craft store to buy beads. The table shows her choices.
Bead Packages
Number per Package
Cost
25
$1.25
70
$2.50
100
$2.95
180
$3.60
Which should Katya choose if she wants to buy the package of beads with the lowest unit cost?
O A. 25 beads for $1.25
B. 70 beads for $2.50
O C. 100 beads for $2.95
D. 180 beads for $3.60

Answers

Answer:

100 beads for $2.95

Step-by-step explanation:

This is because the unit cost per item if you buy 100 beads for $2.95 would be $0.03


CARPENTRY Laura wants to cut a board
into three equal pieces. The board is 5/8
feet long. How long will each piece
be?

Answers

Answer:

it is equal to 1.9 you need to divid 5/8 by three then you'll find your answer I'm not sure if I'm correct

You have two coupons, one is for $25 off and the other is for 25% off. When would you use the $25 off coupon? When would you use the 25% off coupon? When would it not matter which coupon you use?

Answers

Answer:

If I had two coupons, one for $ 25 off and the other for 25% off, to determine when I would use the $ 25 off coupon and when I would use the 25% off coupon, and when it would not matter which coupon I would use, I must carry out the following reasoning:

The $ 25 off coupon is a flat coupon, that is, it does not adapt to the price of the thing to be paid, but rather maintains its value constantly. Therefore, its utilization will be higher if those $ 25 represent a high value compared to the initial price of the product: if the thing is worth $ 50, a $ 25 off coupon represents half its value, while if the thing is worth $ 500, that same coupon will only represent 5% of it. Therefore, I would use the coupon for things that are worth between $ 25 and $ 99.

Instead, the 25% off coupon is a variable coupon, which is adapted according to the value of the product. In other words, a discount will always be made for 25% of said value: if the product is worth $ 80, the discount will be $ 20 (80 x 0.25), while if the product is worth $ 1,000, the discount will be $ 250 (1000 x 0.25 ). Therefore, I would use the coupon for products with a price greater than $ 100, that is, from $ 101 and up.

Finally, since 25% of $ 100 is $ 25, if you buy something of that value, it would be indistinct to use either of the two coupons.

Can someone help me find the area

Answers

Answer:

136 cm²

Step-by-step explanation:

Area of the composite figure = area of the triangle + area of the rectangle

= ½*bh + L*W

Where,

b = 16 - 8 = 8 cm

h = 13 - 7 = 6 cm

L = 16 cm

W = 7 cm

Plug in the values into the equation

Area of the composite figure = ½*8*6 + 16*7

= 24 + 112

= 136 cm²

PLEASE HELP. I BEG. THIS IS DO IN A COUPLE OF HOURS.
1. Kristie ate lunch at Pholicious and wanted to leave a 15% tip. Her meal cost $15.75.
How much should she leave for tip? Round to the nearest cent. Explain how you got
your answer.
<
2. Lyla bought a pair of shoes that cost $80. The discount is 50% off and she has a
coupon for an additional 10% off the discounted price. What is the final price of the
shoes before tax? Explain how you got your answer.
3. Andy bought the Xbox One bundle on Black Friday for $350 and the NBA 2K18 for
$45.
PART A. If sales tax is 8% in orange county what is the sales tax that he will be round to the nearest sent
part to be

Part B what is the total price?

Explain how you got your answer.

Answers

Answer:

Step-by-step explanation:

Meal cost=$15.75

tip=15%

   =  (15*15.75) /100

=236.25/100

  =2.235$=2.24 will give as tip

Cost of shoes=80$

Discount=50%

coupon discount=10%

Total discount=50%+10%=60%

Final price of shoes=?

( 60*80)/100

4800/100

48

60% of 80 is 48 .

pricec  that lyia paid=total price-dicount

         =80-48

         =32$

Xbox=$350

NBA=$45

total=395$

sales tax=8%

(8*395)/100

3160/100

31.6=31.60$

For total price=31.60+395=426.6$

Answer:

1.) $2.36  

2.) $36

3.) a) $31.60

3.) b) $426.60

Step-by-step explanation:

1.) To begin we need to convert 15% to a decimal. To do this we can move the decimal point 2 spaces to the left. This gives us 15% -> 0.15

Then we multiply this number (0.15) by the total mean cost.

15.75 · 0.15 = 2.36

This means that a 15% tip on a $15.75 meal would add $2.36 to the total cost.

2.) To begin we need to find what 50% of 80 is. This is simple because 50% is half of the original price. We can also move the decimal place over 2 numbers to the left to get 0.50 and multiply this by the original price.

80 · 0.50 = 40         OR...        80 ÷ 2 = 40

Now the problems says that Lyla has an extra 10% off from that discounted price that we just figured out (40). We move the decimal place 2 numbers to the left again and multiply by 40.

40 · 0.10 = 4

Finally we subtract our 10% discount (which is $4) from our new original price ($40).      

40-4 = 36

3.) a.) 350 + 45 = $395 ( this is the price of both items before tax).

To find the extra cost of the 8% tax we move the decimal over to the left 2 places. 8% -> 0.08

We can then multiply of cost and tax.

395 · 0.08 = 31.60 (this means that there is a $31.60 tax on this purchase).

3.) b.) For the total price we add the tax we just found and the original cost of the 2 items.

$31.60 + $395 = $426.60

Mr. Turner bought x boxes of pencils. Each box holds 25 pencils. He left 3 boxes of pencils at home and took the rest to school. Write a function rule that represents the total number of pencils he took to school.

Answers

Answer:12

Step-by-step explanation:I divided 3 by 120 and got 0.12 take the zesty out and the demical

Helppppp pleaseeeeee asapppp

Answers

answer: 155 sq m

(12)(4)+(2)(8)+(13)(7)
48+16+91
155

The volume of a cone =13πr2h
=
1/3πr2h

Where h is the vertical height of the cone and r
is the radius of the circle. Use 3.14 for π
What is the volume of a cone which has a radius of 5 cm and a height of 16 cm?

Round your answer to the nearest whole number.

Answers

Answer:

Volume of cone = 418.67 cm³ (Approx.)

Step-by-step explanation:

Given:

Radius of cone = 5 cm

Height of cone = 16 cm

Find:

Volume of cone

Computation:

Volume of cone = [1/3][π][r²][h]

Volume of cone = [1/3][3.14][5²][16]

Volume of cone = [1/3][3.14][25][16]

Volume of cone = [1/3][3.14][400]

Volume of cone = [1/3][1,256]

Volume of cone = 418.67 cm³ (Approx.)

Find the slope of the
(4,5), (6,2)

Answers

Answer:

Answer and steps are in picture.

The slope is m= negative 3/2

Find the value of x

Answers

Answer:

v=53

Step-by-step explanation:

90-37=53

since it’s equal to 90 degrees because it has a right angle, just subtract 90 to 37...




The table below lists the number of layers of centimeter cubes, along with the number
of cubes in each layer, in each of four rectangular prisms.
LAYERS OF CUBES IN RECTANGULAR PRISMS
Prism
Number of
Layers
Number of Cubes
in Each Layer
R
3
8
S
5
5
T
6
5
U
7
4
Which rectangular prism has the greatest volume?
A Prism R
B Prism S
C Prism T
D Prism U

Answers

Answer:

The answer would be C: Prism T

Step-by-step explanation:

R=3x8=24 cubes

S=5x5=25 cubes

T=6x5=30 cubes

U=7x4=28

Therefore, T is biggest

1. The graph of f(x) = x^2 was transformed to create the graph of g(x) = f(x) + 11. Which statement about the graphs is true?
A. The y-intercept of the graph of g is 11 units above the y-intercept of the graph of f
B. The vertex of the graph of g is 11 units to the right of the vertex of the graph of f
C. The graph of g is a reflection of the graph of f across the y-axis
D. The of g is a reflection of the graph of f across the x-axis
2. The graph of g (x) = x^2 was transformed to create the graph of h (x) = 3x^2. Which of these describes the transformation from the graph of g to the graph of h?
A. A vertical stretch by a factor of 3
B. A vertical compression by a factor of 3
C. A reflection over the x-axis
D. A vertical shift up 3 units
3. The graph of f (x) = x^2 was transformed to create the graph of g (x) = 1/4x^2. Which of these describes this transformation?
A. The graph shows a vertical compression
B. The graph is a reflection across the x-axis
C. The graph shows a shift up
D. The graph shows a vertical stretch

Answers

1 A

2 B

3 D

these are the answers

Given the function: f(x)=x^2+1
a) Find f(–6) | b) Find f(8)

pls help me

Answers

Answer:

a) f(-6) = 37

b) f(8) = 65

Step-by-step explanation:

f(-6) = (-6)² + 1 = 36 + 1 = 37

f(8) = 8²+ 1 = 64 + 1 = 65

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