1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frosja888 [35]
3 years ago
12

A company is testing a new protein shake which they claim works better than their existing brand in improving an athlete's perfo

rmance. The company selected 60 athletes from a training camp database, and divided them into three groups. The ages for the groups were 16 to 20 years, 21 to 25 years, and 26 to 30 years. In each group, half of the subjects were asked to use the new protein shake for a month, and the other half were asked to use the company's existing brand for a month. The subjects were not informed about which protein shake they would be using. Which statements about this study are true? The study uses blocking to reduce variability from known factors. The study does not use a control group. The study uses random sampling. The study uses blocking on the basis of gender. The study uses a repeated measure design to reduce variability from unknown factors.
Mathematics
1 answer:
stepladder [879]3 years ago
8 0

Answer:

The study uses random sampling

The study uses blocking to reduce variability from known factors

Step-by-step explanation:

Correct on Plato/Edmentum

You might be interested in
Find the measure of an angle between 0º and 360º coterminal with an angle of –110º in standard position
kondor19780726 [428]
<h2>Answer:</h2>

An angle measures how how much you have to rotate one line called <em>initial side</em> so it lies on the top of other line called the <em>terminal side. </em>Angles whose vertex is located at the origin having the initial side on the positive x-axis is said to be in standard position. On the other hand, coterminal angles are angles in standard position having the same terminal side. In this way, for the angle:

-110^{\circ} \\ \\ Its \ coterminal \ is: \\ \\ \alpha=360^{\circ}-110^{\circ}=\boxed{250^{\circ}}

3 0
2 years ago
Cos^4A - sin^4A = COS2A​
Elenna [48]

Step-by-step explanation:

hope u understand it's just a simple formula

8 0
2 years ago
.. 600 is what percent of 150?
Roman55 [17]

Answer:

400%

Step-by-step explanation:

We can write a percent proportion:

600/x = 150/100

a:b = c:d

a and d are linked and b and c are linked. So if a is missing, you would do (b*c)/d to get a, if b was missing, you would do (a*d)/c to get b, etc.

So over here we do

(600*100)/150 = 60,000/150 = 400, so x = 400, so that means it's 400% of 150

We can also use benchmark fractions which I find much easier:

100% of 150 is 150.

So 200% of 150 is 300

So 300% of 150 is 450

And 400% of 140 is 600

Every time it increases by 100%, it also increases by 150 on the other side, which makes sense

Let me know if you have any questions.

4 0
2 years ago
Solve for x in the diagram below.
user100 [1]

Answer:

x = 34°

Step-by-step explanation:

As you can see, in your pic there is a straight angle which is equal to 180°

Therefore, all the 3 angles combined will be equal to 180°

5 0
2 years ago
2. Define the absolute value function, y = |x|, as a piecewise function. Please include complete sentences and examples to justi
Mekhanik [1.2K]
Y = |x| = x if x ≥ 0, -x if x < 0

absolute value can be interpreted as a function that does not allow negative real numbers, forcing them to be positive (leaving 0 alone). if the input x is more than or equal 0, then x stays positive so there is no need to do anything: "x if x ≥ 0".
if the input is less than 0, then it is an negative number and needs a negative coefficient to negate the negative: "-x if x < 0"

example: if x = -3, then it will take the "-x if x < 0" piece resulting in y = -(-3) = 3, which is what |-3| does

if x = 1, it will take the "x if x ≥ 0" piece and just have y = 1 which is what |1| does.

for x = 0, it will take the "x if x ≥ 0" and just have y = 0 which is what |0| does
7 0
3 years ago
Other questions:
  • 1. The linear equation y = 3x tells us that this line is going to be more vertical or horizontal? Explain.
    13·2 answers
  • Imagine that after washing 5 distinct pairs of socks, you discover that two socks are missing! of course, you would like to have
    15·1 answer
  • MATH WHAT IS THIS!!!
    13·2 answers
  • Order the numbers from greatest to least. 3.5, 6, 2)1)2 , 3)4
    13·2 answers
  • Help me me please https://brainly.com/question/22734415
    6·1 answer
  • Compute the exact value of the function for the given x-value without using a calculator.
    13·2 answers
  • The perimeter of a triangle is 27 centimeters. Two sides of the triangle are 7 centimeters and 13 centimeters. Find the length o
    9·1 answer
  • The diameter is twice the radius<br> True<br> O False
    8·2 answers
  • How do we come to understanding a big concept in mathematics
    14·2 answers
  • Write this expression so that its denominator, if any, is a positive integer.<br> 2/(3+sqrt(7))
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!