The question is incomplete. The complete question is :
Members of a research team are considering three studies related to sleep and learning. The first study involves comparing the scores on a post-study test of learning from two groups of randomly chosen adults, with one group getting at least 7 hours of sleep per night for a week and the other group getting at most 6 hours of sleep per night for a week. A second study involves asking a random sample of students at a large university to report the average number of hours of sleep they get each night and their college grade point average. A third study involves asking a random sample of high school students in a large school district whether they feel they get enough sleep to stay alert throughout the school day.
Which study appears to look for an association between two variables without actively manipulating either one. What are those variables ?
Solution :
The second study in the context is involved in asking for a random sample of the students at an university to provide a report the average hours of sleep that everybody get each night and also the grade point of their college appears for association between these two variables without actively changing either of one.
These variables are the grade point average of the students and the numbers of hours of sleep.
If the buses run on schedule, when is the next time a red line and a blue line bus will leave together? Show your work.
Answer:
So the next time they will leave together is 4:24 pm
Step-by-step explanation:
Since both the buses left at 4 pm and red line bus leaves every 6minutes and blue line bus leaves every 8 minutes they next time they leave together can be found by taking the L.C. M of 6 and 8.
The L.C. M is found by multiplying all the factors and chosing one which common in both numbers.
Factors of 6 = 2*3
Factors of 8= 2*2*2
In these numbers 2 is common in both.The rest of the numbers( 2*2*3 )are multiplied with the the common 2 to get the L.C.M
L.C.M= 2*2*2*3= 24 minutes
So the next time they will leave together is 4:24 pm
Two puppies eat 2 cans of dog food in 2 days. How many cans of dog food can 8 puppies eat in 8 days? Note: All puppies eat at the same constant rate.
Answer:
64 cans
Step-by-step explanation:
If two puppies eat 2 cans in two days then you can imagine one puppy eats one and the other puppy eats the other. so if 8 puppies eat in 8 days you would want to do 8 * 8 = 64 cans
Convert the number to standard notation.
3.8 x 10^-6
Answer:
3.8E-6
Step-by-step explanation:
What are the coordinates of the midpoint of this
segment?
Type them into the table below
Please help me with the answer to these. The pictures go together for the problem
Answer:
6.6
Step-by-step explanation:
solve each system by substitution
1/2x+1/3y=6
x-y==2
Step-by-step explanation:
First, let's rewrite the equations.
1/2x + 1/3y =6
x - y = 2
The easiest system to use for substitution is the second one. Let's solve for X.
x - y = 2
add y to both sides!
x = 2 + y
Now that we know x = 2 + y we can use it to substitute in the first equation.
1/2(2 + y) +1/3y = 6
1 + 1/2y +1/3y = 6
5/6y = 5
y = 36/5
How much money was spent?
16
24
28
22
which table shows the relationship y=k/x where k is a real number
Answer:
the answer is 1/5 because y/x gives you k
Step-by-step explanation:
Find the value of x.
Answer:
=147x2+406x−253
Step-by-step explanation:
HELP ASAP
Select the correct answer.
Select the simplification that accurately explains the following statement.
in 3/4 of an hour Ryan codes 3/5 of his game. at this rate how much of the game can he code in 1 hour
Answer:
In one hour, he can code 4/5, 80%, of the game.
Step-by-step explanation:
If he can code 3/5 of his game in 3/4 hour, 60% in 45 minutes, he can code 20% every 15 minutes.
Jeremy had $32.50 in his savings account. He withdrew $4.50 each week for 3 weeks. How much money did he have left in the account after the 3 withdrawals?
Answer:
Jeremy have 19 dollars left.
Step-by-step explanation:
He withdrew $4.50 3 times, so he withdrew $4.50x3 = $13.50 in total
$32.50 — $13.50 = $19
Jeremy had 19 dollars left on his account.
Find the volume of the cone.
me and my crips shoot up yo gang homie
Answer:
u sure abt that?
cuz im the Mandalorian
crips aint got nothing on me and my beskar
THIS IS THE WAY
Carolina va a repartir entre sus estudiantes una barra de chocolate, a Valeria le da 5/18, a Camila le da 1/3, a Carlos 2/9 y a Pedro 1/6. Al ordenar los estudiantes, desde el que recibió más chocolate hasta el que recibió menos, se obtiene:
Respuesta:
Camila> Valeria> Carlos> Pedro
Explicación paso a paso:
Dado que :
Valeria = 5/18
Camila = 1/3
Carlos = 2/9
Pedro = 1/6
Podríamos convertir las acciones recibidas a decimal para facilitar la comparación:
Valeria = 5/18 = 0,27777
Camila = 1/3 = 0.3333
Carlos = 2/9 = 0,2222
Pedro = 1/6 = 0.16666
Comparando los decimales:
0,3333> 0,2777> 0,2222> 0,16666
Camila> Valeria> Carlos> Pedro
An initial investment of 500 compounds continuously at 5% interest ratebe the number of years that the money has been on deposit. Assuming no other deposits are made to the accountwhat will the balance in the account be after years?
What additional information could you use to show that ΔSTU ≅ ΔVTU using SAS? Check all that apply.
Options
A. UV = 14 ft and m∠TUV = 45°
B. TU = 26 ft
C. m∠STU = 37° and m∠VTU = 37°
D. ST = 20 ft, UV = 14 ft, and m∠UST = 98°
E. m∠UST = 98° and m ∠TUV = 45°
Answer:
A. UV = 14 ft and m∠TUV = 45°
D. ST = 20 ft, UV = 14 ft, and m∠UST = 98°
Step-by-step explanation:
Given
See attachment for triangle
Required
What proves that: ΔSTU ≅ ΔVTU using SAS
To prove their similarity, we must check the corresponding sides and angles of both triangles
First:
[tex]\angle UST[/tex] must equal [tex]\angle UVT[/tex]
So:
[tex]\angle UST = \angle UVT = 98[/tex]
Next:
UV must equal US.
So:
[tex]UV = US = 14[/tex]
Also:
ST must equal VT
So:
[tex]ST = VT = 20[/tex]
Lastly
[tex]\angle TUV[/tex] must equal [tex]\angle TUS[/tex]
So:
[tex]\angle TUV = \angle TUS = 45[/tex]
Hence: Options A and D are correct
Its A and D
i just did it on edg
Find the length of each arc. Use the exact answer
Answer:
Option D = 16π/3 ft
Step-by-step explanation:
Arc length formula is written Mathematically as:
Arc length = 2πr × θ /360
r = 4 ft
θ = Central angle in degrees = 240°
2 × π × 4 × 240/360
8π × 240/360
8π × 20/30
16π/3 ft
So, the arc length is 16π/3 ft
can someone help ASAPPP PLEASE
Sheet metal costs $1.88 per square foot. About how much
will Nick spend to cover the outside of the shed, not
including the bottom?
Answer:
Final Cost: $364.72
Step-by-step explanation:
We can see a picture of the shed attached below. To find the total cost we need to first find the surface area of the entire shed. The sides are rectangles, so to find the surface area we need to multiply the length by the width. Since there are two rectangular sides we multiply the result by 2.
A = L * W
A = 10 * 4.7
A = 47 sq ft. * 2sides
Total = 94 sq ft.
Now we calculate the bottom which is also a rectangle
A = L * W
A = 10 * 8
A = 80sq ft.
Now we need to calculate the surface area of the triangular sides and multiply the results by 2 since there are two triangular sides. The formula for the area of a triangle is half times base times height...
A = 0.5 * B * H
A = 0.5 * 8 * 2.5
A = 10 sq ft * 2 sides
Total = 20 sq ft
Finally, we need to add the entire surface area and multiply by the cost per square foot to find the total cost.
94 + 20 + 80 = 194 sq ft
194* 1.88 = $364.72
find the value of x
9−5x=−8
Answer:
x= [tex]3\frac{2}{5}[/tex] or x=3.4
The small pizza is 8 inch what the circumference plz help
What is the IQR of:
44, 38, 51, 59, 53, 47, 52
i forget how to do iqr lol
Answer: 9
Step-by-step explanation:
Dallas put g gallons of gas in his car. If the car holds 21 gallons to begin, which expression tells how much gas was in the car before Dallas bought gas?
Answer:
21
Step-by-step explanation:
tee hee
Answer:
if you are talking about distance on cars i have provided you with a chart of different cars prices and the distance they went/ Vehicle Miles per gallon Gas price, per mile
Subaru Outback 21 $0.14
Chrysler Sebring 21 $0.14
Porsche Boxster 22 $0.13
PT Cruiser 22 |$0.13
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the area of and rectangle
Answer:
the are of a rectangle is length x width
65.6g of sugar is needed to make 8 cakes. How much sugar is needed for 5 cakes?
Answer:
41 grams
Step-by-step explanation:
Ratios:
[tex]\frac{65.6}{8} =\frac{x}{5} \\\\8x=328\\x=41[/tex]
Multiply plz
7(8x + 3)
I will mark brianlest if you can answer all of the questions in the pic.
What must be the annual payment you receive in order to earn 6.3% rate of return on a perpetuity that has a price of $245.1? (Answer in $s to the nearest cent, i.E. Xx.Xx, with no $-sign or commas needed.)
Answer:
the annual payment received is 15.44
Step-by-step explanation:
The computation of the annual payment received is shown below:
As we know that
Perpetuity = Payment ÷ rate of return
$245.1 = Payment ÷ 6.3%
So, the payment is
= $245.1 × 6.3%
= 15.44
Hence, the annual payment received is 15.44
We simply apply the above formula so that the annual amount could come
this graph shows the temperature in Diego's house between noon and midnight one day
Answer:
need picture bro
Step-by-step explanation:
What is the vertical line that divides the parabola into two equal part?
Answer:
It would be the y-axis.
Step-by-step explanation: