a large study used records from canada's national health care system to compare the effectiveness of two ways to treat prostate disease. The two treatments are traditional surgery and a new method that does not require surgery. The records described many patients whose doctors had chosen each method. The study found that patients treated by the new method were significantly more likely to die within 8 years. You have 300 prostate patients who are willing to serve as subjects in an experiment to compare the two methods. Describe a completely randomized design for this experiment. Write a few sentences describing how you would implement your design.

Answers

Answer 1

Answer:

compile the list of the 300 prostate patients considering various diversities  i.e. various ages, various stages of the disease, various racial, social and economic background , various lifestyles as well.divide the sample into two groups, ensuring that each group is diversified equallyAssign each group to the one of the two treatment proceduresfollow up on the different group after treatmentcompare the measurable variables from both groups after treatment in order to determine which treatment method is best

Step-by-step explanation:

A completely randomized design for this experiment can be carried out following the following steps

compile the list of the 300 prostate patients considering various diversities  i.e. various ages, various stages of the disease, various racial, social and economic background , various lifestyles as well.divide the sample into two groups, ensuring that each group is diversified equallyAssign each group to the one of the two treatment proceduresfollow up on the different group after treatmentcompare the measurable variables from both groups after treatment in order to determine which treatment method is best

Related Questions

Which expression is equivalent to (3w−8)−4(2w+3)

Answers

Answer:

-5w -20

Step-by-step explanation:

(3w-8) -4(2w+3) start by removing the parentheses

3w-8-4(2w+3)

-5w-8-12 collect like terms

-5w-20 and that's how you get the answer

can someone convert that to point slope form and tell me the steps?

Answers

First you need to get x to the other side so subtract it from each side to get
-2y=-x-2
Then divide everything by negative 2 and you have your answer
y=1/2x+1
1x-2y=-2
-1x -1x
-2y=-1x-2
-2 -2 -2
y=1x+1
2

(The form is y=Mx+b so we want the y in front of the equation so we solve for x)

We divide -2 because we want the y isolated(aline and we want the y positive too)

And there is your answer

Hope this helps :D

Need help will mark brainliest

Answers

Answer:

AB≅AC  (two legs of isosceles triangles are always equal)

6x-14 = 4x+20

2x-14 = 20

2x = 34

x = 17

Base ⇒ 7x-12

           = 7(17)-12

           = 119-12

           = 107

Answer:

x=17, 107

Step-by-step explanation:

Since it is given that the triangle is isosceles, we can make the following equation:

6x-14=4x+20

x=17

To find the base (7x-12), all you have to do is plug in the value of x

7x-12

7*12-12

107

I hope this helps :)

If –y + 2x^2 – x = -5y^3 then find dy / dx in terms of x and y.

Answers

Answer:

dy/dx = [tex]\frac{4x-1}{1-15y^{2} }[/tex]

Step-by-step explanation:

-y + 2x²- x = -5y³

2x² - x = y - 5y³

4x - 1 = dy/dx - 15y².dy/dx

dy/dx(1 - 15y²) = 4x - 1

dy/dx = [tex]\frac{4x-1}{1-15y^{2} }[/tex]

Elena is playing a dice game with her father. She will win if she DOES NOT roll a 1, 3, or 6. Find the probability that Elana wins on her next roll.

Answers

Answer:

The probability that she was on her next roll is 1/2

Step-by-step explanation:

If she does not roll 1,3 or 6, she wins

So if she rolls 2,4 and 6 , she wins

The probability of rolling each is 1/6 each

So the probability of rolling any of the three will be:

1/6 + 1/6 + 1/6 = 3/6 = 1/2

What is the range of the function on the graph?​

Answers

Answer:

The range is greater than or equal to -3

Step-by-step explanation:

The range is y.

At y  = -6, x doesn't have values.

At y = -3, x stops; therefore, y is greater or equal to -3.

At y = 2, x has values.

It takes Taylor hour to make of a batch of cookies. About how long will it take him to make 8 batches?


A.

1.1 hours

B.

3.6 hours

C.

5.4 hours

D.

7.2 hours

Answers

Answer:

7.2 I think, closest to 8 hours?

help no good at maths

Answers

We know that all angles of a triangle equal 180 when added together. We have two angle measures which are 3/2x and 1/2x
***3/2x + 1/2x + x = 180 degrees***
For the other way you can switch around the positions of the angles in the equation as long as the = stays 180 so like
X + 3/2x + 1/2x = 180
180 + x + 1/2x + 3/2x
Or maybe change the 3/2x to 1 1/2x

Adam Levine wants to buy a new outfit for the Voice. The suit he wants is priced at $300
but it is on sale for 22% off. What discount would Adam get if he buys the suit?
He would get a discount of $

HELP!

Answers

Answer:

66 bucks

Step-by-step explanation:

take 300 and 22% then subtract that answer from 300.

Tell me which ones are greater than or lesser than with these <>?

Answers

Answer:

1. >

2.<

3.<

btw

Absolute value equations are equations where the variable is within an absolute value operator, like |x-5|=9. The challenge is that the absolute value of a number depends on the number's sign: if it's positive, it's equal to the number: |9|=9. If the number is negative, then the absolute value is its opposite: |-9|=9.

g(x) = 9(2x2 + 6
)
Determine g(1)

Answers

Answer:

g(1) = 72

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

g(x) = 9(2x² + 6)

g(1) is x = 1

Step 2: Solve

Substitute:                    g(1) = 9(2(1)² + 6)Evaluate:                       g(1) = 9(2(1) + 6)Multiply:                        g(1) = 9(2 + 6)Add:                              g(1) = 9(8)Multiply:                        g(1) = 72

Choose a system of equations with the same solution as the following system:
4x − 2y = 6
2x + y = 5

A) −4x − 2y = 10
2x − 3y = 21

B) 4x + 2y = 10
10x + y = 21

C) −4x − 5y = −1
2x − 6y = 10

D) 3x + 2y = 6
9x + y = 17

Answers

Answer:

The answer is C.

Answer:

the answer is C

Step-by-step explanation:

I took the test

Can you help me? Thanks!

Answers

Answer:

the answer is here

Step-by-step explanation:

180- 68

=112

10x+36-38x-47 I don't understand this question i am so confused please explain i would be really thankful.

Answers

-28x-11

Step-by-step explanation:

10x-38x=-28x

+36-47=-11

so the answer is -28x-11

To change Celsius temperatures to Fahrenheit temperatures, you can use the formula F = 95C + 32. Which answer is the best first step to solve the equation for C?

Answers

Answer: I think that the guy above is right just subtract 32.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

The first step in solving the equation for C is

Subtract 32 on both sides.

F - 32 = 95C + 32 - 32

F - 32 = 95C

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example:

2 + 3x + 4y = 7 is an expression.

We have,

To change Celsius temperatures to Fahrenheit temperatures, you can use the formula F = 95C + 32.

Solve for C.

F = 95C + 32

Step 1:

Subtract 32 on both sides.

F - 32 = 95C + 32 - 32

F - 32 = 95C

Divide both sides by 95.

(F - 32)/95 = C

C = (F - 32) / 95

Thus,

The first step in solving the equation for C is

Subtract 32 on both sides.

F - 32 = 95C + 32 - 32

F - 32 = 95C

Learn more about expressions here:

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If f(x) = x and g(x) = X + 2, which statement about the graphs of the functions is true?
A. g is a translation of f 2 units down.
B. g is a translation of f 2 units to the right.
C. g is a translation of f 2 units to the left and 2 units down.
D. g is a translation of f 2 units up.
PLEASE HELP ME DUE IN 10 minutes!!!

Answers

Answer: D

Step-by-step explanation: +2 would be an upwards translation


Find the midpoint of the line segment joining the points (9,2) and (-3,-2)

Answers

Answer:

(3,0)

Step-by-step explanation:

The midpoint formula is as follows:

[tex]( (x1+x2) /2, (y1 + y2) /2 )[/tex]

x1 would be 9, x2 would be -3, y1 would be 2, y2 would be -2. When plugged in, you should get 6/2, and 0/2 for y. When simplified, x would be 3 and y would be 0. This means that the midpoint of the line segment is (3,0)

Which of the following is equivalent to -(7/4) ?

A. 7/-4



B. -7/-4



C. 4/-7



D. 7/4

Answers

Answer:

A

Step-by-step explanation:

-(7/4) equals -7/4 or negative seven forths. Its doesn't matter where the negative sign is as long there's only 1 of them and that its still 7/4.

So through process of elimination, we take out B because theres 2 negative, which make a positive, our answer is negative

C is wrong because its 4/7, not 7/4

D is wrong because it's positive, leaving us with A

Shopping spree. Greg is shopping in a large urban depart-

ment store with many floors. He enters the store on the

middle floor from a skyway, and he goes directly to the

credit department. After making sure his credit is good, he

goes up three floors to the housewares department. Then

he goes down five floors to the sporting goods department.

Next, he goes up six floors to the media department. Finally,

he

goes

down ten floors to the main entrance to the store on

the first floor at ground level and leaves to go to another store.

How many floors does this department store have if it has no

basement?

Answers

Answer:

12 floors

Step-by-step explanation:

middle +3 floors= +3 .

+3 - 5 = -2.

-2 + 6= +4.

+4 - 10 = 6 x 2 = answer 12

to clarify the plus or minus mean how many floors he is above or below   the middle floor

Find the length of C using the Pythagorean theorem

Answers

Answer:

14^2+48^2=2500 sqrt2500= 50 c=50

Step-by-step explanation:

The length of c using the Pythagorean theorem is 50 units.

What is Trigonometry?

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.

The given triangle is ABC which is right angle triangle

AB=c

BC=14 and AC=48

We have to find the value of c

By Pythagoras theorem, in a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides

AB²=AC²+BC²

c²=48²+14²

c²=2304+196

c²=2500

Take square root on both sides

c=√2500

c=50

Hence, the length of c using the Pythagorean theorem is 50 units.

To learn more on trigonometry click:

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Expand and simplify 6(2x - 3) -2 (2x + 1)

Answers

Answer:

8x-20

Step-by-step explanation:

The answer to the question is 8x-4

If a train travels 1,600 km in 16 hours, how fast is it moving?

Answers

Answer:

100km per hour

Step-by-step explanation:

16/16= 1 hour

1600/16= 100

What value of x makes the equation true?

6x+8=3x-19

A. x = 3
B. x = -3
C. x = -9
D. x = -11/3

Correct answer will get brainiest!

Answers

Answer:

C

Step-by-step explanation:

Given

6x + 8 = 3x - 19 ( subtract 3x from both sides )

3x + 8 = - 19 ( subtract 8 from both sides )

3x = - 27 ( divide both sides by 3 )

x = - 9 → C

Find the square root of 36 by prime factorisation
method​

Answers

Answer:

36

2×18

2×9×2

2×2×3×3

=> square root of 36 =6

Nathan writes an essay with a total of 583 words. Every line of his essay has 11 words.
How many lines long is Nathan's essay?

Answers

Answer:

53 lines

Step-by-step explanation:

You would divide 583 by 11, and that would get you your final answer of 53 lines.

Answer:

53 lines

Step-by-step explanation:

11 words → 1 line

583 words → (1/11 x 583) lines = 53 lines

Which value of x makes this equation true? 35 + 42 = 12 + x​

Answers

Answer:

65

Step-by-step explanation:

So let's first set up our equation here:

35 + 42 = 12 + x

Now, let's add like terms

77 = 12 + x

Now, let's subtract both sides by 12

65 = x

Answer:

x=63

Step-by-step explanation:

35+42= 75

75-12= 63

Find the measure of angles 1,2 and 3

Answers

Answer:

??

Step-by-step explanation:

where is the question

Mai earns $7 per hour mowing her neighbors' lawns. She also earned $14 for hauling away bags of recyclables for some neighbors.

Answers

Answer:

Step-by-step explanation:

7x + 14 = 8.4x

14 = 1.4x

x = 10 hours

Each works 10 hours. Their total is 84 dollars each.

If a = -9 and b = 4, what is the value of a + b ?
A. -5
B. 5
C. -13
D. 13

Answers

Answer:

A. -5

Step-by-step explanation:

-9 + 4 = -5

hope this helps

Help please! Explain it to me. And give an idea to create ​

Answers

Answer:

You could design a solar panel.

Step-by-step explanation:

Nature uses sunlight to grow and provide food for animals, but it only uses what it needs. And it forms a function. So by designing a solar panel, you imitate the way nature works. Solar panels only soak in sunlight for energy when it needs it, which is a function that provides electricity.

(What the question is asking is that you design a product in which some of the aspects listed would be imitated)

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