To study the effects of a medication on migraines, every 10th adult from an alphabetized list of patients who suffer from migraines were selected. Then, the sample was surveyed about the number of migraines they have each month. The names of the 50 adults selected were written on equal sized tiles, placed in a bag, and mixed well. The people with names on the first 25 tiles selected were given the migraine medication. The remaining 25 people were given a placebo. After six months, all patients were surveyed again about the number of migraines they had each month. The change in the mean number of migraines between the two groups was compared. Which of the following is the best description of the randomization approach? random selection random assignment both random selection and random assignment neither random selection nor random assignment

Answers

Answer 1

Answer:

Random Assignment

Step-by-step explanation:


Related Questions

what are the first four terms in the sequence Tn=4n+9?

Answers

Answer: If the initial term of an arithmetic sequence is a 1 and the common difference of successive members is d, then the nth term of the sequence is given by: a n = a 1 + (n - 1)d The sum of the first n terms S n of an arithmetic sequence is calculated by the following formula: S n = n (a 1 + a n)/2 = n [2a 1 + (n - 1)d]/2

y = 4x – 1 with inputs x = -3, x = -2, and x = -1

Answers

Part 1. If x = -3 the equation would be. Y = -12-1 which would be Y= -13

Part 2. If x = -2 the equation Y = -8-1 which would be Y = -9

Part 3. If x = -1 the equation would be. Y =-4-1 which would be Y = -5

Help help help help help help math sucks help

Answers

-24,16
16,8
-8,-24
Hope this helps.

find thr value of a and b ​

Answers

Answer: a) 250

b) I don’t understand

Step-by-step explanation: I’m not sure if it’s correct or not

Step-by-step explanation:

a⟩. a = (5x²)/2 = {5(10)²}/2 = {5(10*10)}/2 = {5(100)}/2 = 500/2 = 250Ans.

b⟩. b = {2x²(x - 5)}/10x = [2(10)²{10²-5}]/10(10)² = [2(10*10){10*10 - 5}]/10(10*10) = [2(100){100 - 5}/10(100) = [200 {95}]/1000 = 19000/1000 = 19 Ans.

Hope this helps!!

Which fractions are equivalent to 1012?

Select each correct answer.




​23​

​56​

​1224​

​3036​

​5060​

​6084

Answers

Answer:

5/6, 30/36, 50/60

Step-by-step explanation:

10/12 divided by 2= 5/6

10/12•3= 30/36

10/12•5= 50/60

Write 0.007 as a fraction.
Do not try to simplify your answer.
05

Х
5
?

Answers

Answer:

7/1000

Step-by-step explanation:

Help pls will give brainlist

Answers

Answer:

should be c

Step-by-step explanation:

Answer:

B) is the answer I hope I could help

Use the distributive property to write an expression equivalent to 7(48).



Drag and drop the appropriate number into each box.

Answers

Answer:

336

Step-by-step explanation:

7x48=

7(8)= 56

7(4)+5= 33

7(48) = 336

Answer:

336

Step-by-step explanation:

Help Help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

were is the qn?

Step-by-step explanation:

how many diffrent ways can a psychology student select 5 subjects from a pool of 20 subjects and assign each one to a diffrent experiement

Answers

Answer:

Since its different experiment. Then it's permutation,

Therefore it's 20P5 = 1860480 Ways

What Value is equivalent to 30-6 x 3

Answers

Answer:

5/1

Step-by-step explanation: I could be wrong though

Have a Good Day <3

5/1 this should be right


The babysitter charges $10 per hour plus $5 for gas to come to the house. Let h represent the number of hours. Which expression represents the total
cost of hiring a babysitter for the evening?

Answers

Answer:  10h+5

Explanation:

10h represents the cost of $10 per hour for h hours, where h is some positive whole number. We tack on the extra $5 to add on the cost of gas.

For example, if the babysitter works for 7 hours, then h = 7. It leads to a cost of 10h+5 = 10*7+5 = 70+5 = 75. The total cost is therefore $75 in this case.

Reasoning if you know one angle measure of a parallelogram, how do you find the other three angle measures? Explain. ​

Answers

To find the other angles in a parallelogram if only one is given then you need to subtract the number with 180 to find the consecutive angles. With the theorem 6-5 opposite angles are congruent, so the opposite side would have the same value.

A motor that’s rated at 1/8 horsepower is used to drive a pump. How much horsepower will be applied to the pump if the motor delivers only 2/7 of its rated horsepower?
A. 23/56
B. 1/28
C. 2/15
D.7/16

Answers

Based on the information given, the fraction of horsepower that will be applied to the pump will be 1l28.

From the information given, it can be seen that the motor is rated at 1/8 horsepower and used to drive a pump.

Therefore, the fraction of the horsepower that will be applied to the pump if the motor delivers only 2/7 of its rated horsepower will be:

= 2/7 × 1/8.

= 2/56

= 1/28

Learn more about fraction on:

https://brainly.com/question/25803541

Write the equation of the line passing through the points (9,2 ) and (-3, -2)

Answers

Answer:

[tex]y=\frac{1}{3} x-1.[/tex]

Step-by-step explanation:

if A(9;2), B(-3;-2) then it is possible to make up the required equation according to the form:

[tex]1. \ \frac{x-X_B}{X_A-X_B} =\frac{y-Y_B}{Y_A-Y_B}[/tex]

2. after the substitutuion X(A)=9; X(B)=-3; Y(A)=2 and Y(B)=-2 into the form:

[tex]\frac{x+3}{9+3} =\frac{y+2}{2+2}; \ => \frac{x+3}{12} =\frac{y+2}{4}; \ => \frac{x+3}{3} =y+2.[/tex]

or in slope-interception form:

[tex]y=\frac{1}{3} x-1.[/tex]

- Kerry multiplied 143.64 X 10 and got 14.364. Is Kerry's answer correct?
If not, tell what Kerry might have done incorrectly.

Answers

Is the wrong answer, the correct answer is 1,436.4

What is the terminal point of the vector a = (2,4) based at P = (3, 4)?

Answers

Answer:   (5, 8)

Explanation:

Start at the point (3,4) which is the tail of the vector. We move 2 units to the right and 4 units up to arrive at (5,8) due to the vector a = <2,4>. Effectively, we're using the translation rule [tex](x,y) \to (x+2,y+4)[/tex]

In other words, we add 2 to the x coordinate and add 4 to the y coordinate of the point (3,4) to move to (5,8)

Solve the differentiable equation if possible:

Answers

Look at the photo for the first few steps. After that, follow the steps I’m typing…

D/dt [e^-t y] = te^-t

D/dt [e^-t y] dt = te^-t dt

E^-t y = te^-t dt

E^-t y = -te^-t - e^-t + C

Answer: y= -t -1 + C/e^-t

Hi I need help pls
50 points

Answers

Answer:

in the first box i do believe it would be 55 and in the second box it would be 45,

Step-by-step explanation:

the probability that a tin of paint is dented is 0.07 out of 3000 tins of paint,how many would you expect to be dented?

Answers

Answer:

210

Step-by-step explanation:

3000×0.07

PLZ HElp 24nanjoshua PLZZZZ

Answers

Answer: 11/14

Step-by-step explanation:

1/7 = 2/14 (when you time 2 at the top and at the bottom)

2/14 + 9/14 = 11/14

Answer - 11/14
Just do 2/14+9/14=11/14

Five students share the writing of a term
paper evenly. If each person writes more
than six pages, how long is the paper?

Answers

Answer:

Over 30

Step-by-step explanation:

There is no definite answer if you don't know how many pages each person. All you have to do is multiply 5 by 6

Write an integer to represent each situation


1. walking to the track 6 feet ______
2. digging 10 holes a day _____
3. writing 5 papers ______


Find the absolute value

1. /-3/3 2. /+3/3 3. /-2/

4. /-6/ 5. /+9/ 6. /-15/

7. /=32/ 8. /+32/ 9. /-47/

10. /+78/​

Answers

Answer:

1. 6 2. 10 3. 5

for others see below

Step-by-step explanation:

1. 6 feet

2. 10 holes

3. 5 papers

1./-3/3=3*3=9

2. /3/3=3*3=9

3./-2/=2

4./-6/=6

5./9/=9

6. /-15/=15

7. /-32/=32

8. /32/=32

9. /-47/=47

10. /78/=78

3.
Classify the function as linear or quadratic and identify the quadratic, linear, and constant terms.

f(x) = 6x2 + x − 12

A. quadratic function; quadratic term: 6x2; linear term: x; constant term: −12

B. linear function; linear term: 6x2; constant term: −12

C. quadratic function; quadratic term: −12x2; linear term: −6x; constant term: −12

D. linear function; linear term: x; constant term: −12

Answers

Answer:

A. quadratic function; quadratic term: 6x2; linear term: x; constant term: −12

Step-by-step explanation:

We have been given the equation

The degree of the given polynomial is 2.

Hence, the function is quadratic.

The term with exponent 2 on x is called the quadratic term. The term with exponent  1 on x is called linear and the term without any variable is a constant term.

Therefore, we have

Quadratic term= 6x^2

Linear term= x

Constant term= -12

9514 1404 393

Answer:

  A. quadratic function; quadratic term: 6x²; linear term: x; constant term: −12

Step-by-step explanation:

The squared term (6x^2) is also called the "quadratic" term. The term with x to the first power (no exponent) is the "linear" term. The term with no variable at all is the "constant" term.

It should be no mystery that the quadratic term is 6x^2; the linear term is x; and the constant term is -12.

_____

Additional comment

As with much of algebra, this is about vocabulary and pattern recognition.

HELP PLSSSS OMG Round answer to nearest tenth too I KEPT GETTING I WRONG

Answers

Answer: where is the picture?

x+x+y×y simplified ?​

Answers

Answer:

(x+x)+ (y+y)

=2x + 2y

thank you

come here in meet dpibazhogk

Hey there!

x + x + y × y

= 1x + 1x + 1y × 1y

COMBINE the LIKE TERMS

= (1x + 1x) + (1y × 1y)

= 2x + y²

= y² + 2x

Therefore, your answer should be: y² + 2x

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

List at least five importance of having self discipline m following protocol during enhanced community quarantine in your respective barangay ​

Answers

Answer:

no clue -0- if I knew I would tell you

help fast
E explaination​

Answers

Answer:

a)3.4

b)8.3

c)6.30

d)19

Step-by-step explanation:

hope it can help you lovelots

#LEARN WITH BRAINLY

What is the value of y in y = log_64 64?

Answers

Step-by-step explanation:

if I understand this correctly as logarithm of 64 to the base of 64, then the answer is clearly 1

64¹ = 64.

PLEASE HELP WITH THIS ONE QUESTION

Answers

Answer:

The graph moved down 5 units

Step-by-step explanation:

Answer:

Step-by-step explanation:

The best way to get an answer to this question is to study the graph you get when you study the result from Desmos, which is a free  graphing program.

Notice the way the graph is laid out. If the graph was simply y = x^2 - 6x  then the y value for the minimum value would be x = 3 (just like the 2 values you do get) and y = -9

But y = x^2 - 6x + 3 has you moving up 3 units to y = - 6 and y = x^2 - 6x + 8 moves you to y = - 1. Which way are you going? The difference is 5 units and you are moving down because you start  at y = x^2 - 6x + 8 and move down to x^2 - 6x + 3.

Without finding minimums (which is a cumbersome process which needs to be done twice) there's no easy way to do this except graphing.

The answer is B.

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