Researchers at Mississippi State University were studying the impact of different environmental sounds on ecosystems. For their study, they created 333 similar ecosystems in their lab containing a variety of insects and plants. They randomly assigned each ecosystem to be exposed to rock music, country music, or a conventional city soundscape for two consecutive weeks. At the end of the study, they measured how successful the species were in each ecosystem. What type of experiment design is this?

Answer:

The experiment design used in this case is the between-subjected design.

Step-by-step explanation:

Between-subject design is a sort of experimental design where the individuals of an experiment are allocated to varied situations, with each individual being treated with only one of the experimental conditions.

In this case three similar ecosystems are designed containing a variety of insects and plants. Then each ecosystem to be exposed to rock music, country music, or a conventional city soundscape for two consecutive weeks.

Then after two weeks period they measured how successful the species were in each ecosystem.

The experiment design used in this case is the between-subjected design.

Answer:

A completely randomized design

Step-by-step explanation:

The 3 ecosystems were each randomly assigned a treatment. They were not grouped in any way with random assignment happening within each group, so this is a completely randomized design. (From Kahn)

if side of the triangle in 8cm and side 2 is 5cm, then what is the possible range for the length of the third side of the triangle?​

Question 9 of 25
What is the measure of angle b
А
35
C
B

Which ratios approximate pi ​(​)?
Select all the ratios that approximate pi ​(​).
A.
​66:21
B.
​60:20
C.
​21:7
D.
​45:15
E.
​22:7

Given:
p: student achieves 90 percent on the geometry final.
q: student will receive a passing grade in geometry class.
Which statement is logically equivalent to q - p?
If a student achieves 90 percent on the geometry final, then the student will pass geometry class.
If a student passes geometry class, then the student achieved 90 percent on the geometry final.
If a student did not achieve 90 percent on the geometry final, then the student did not pass geometry class.
Olfa student did not pass geometry class, then the student did not achieve 90 percent on the geometry final.

Stacey and her friend went to Outback Steakhouse and spent $45. They wanted to leave a 20% tip, because the service was terrific. What was the total cost of the bill with tip?

What is the value of the expression below.
||3-7| - |-6+3||

Mrs Buchanan is planning

A birthday celebration meal is $47.40 including tax, but not the tip. Find the total cost if a 15% tip is added to the cost of the meal.
th
The total cost is $

I need the answer plzz

After three plays in which a football team lost 7 yd, gained 3 yd, and
lost 1 yd, respectively, the ball was placed on the team’s own 30-yd line.
Where was the ball before the three plays?

g(x) = -4x – 5
f(x) = -4x - 1
Find g(-6) + f(-6)

What do the factors in the factored form represent?

Anyone want to try this?

I’ll give the answer later.

If your try doing this then... good luck! :)

Is <1 and <7 supplementary

Angine and kenny play online video games. Angine buys 1 software package and 2 months of game play. Kenny buys one software package and 4 months worth of game play. Each software package cost $20. If their total cost $142, what is the cost of one month of gameplay?

How many solutions does this equation have? 5 + 2(3 + 2x) = x + 3(x + 1) *

One Solution
Infinite Solutions
No Solutions

You are permitted to use your calculator to solve an equation, find the derivative of a function at a point, or calculate the value of a definite integral. However, you must clearly indicate the setup of your question, namely the equation, function, or integral you are using. If you use other built-in features or programs, you must show the mathematical steps necessary to produce your results. Your work must be expressed in standard mathematical notation rather than calculator syntax.

Show all of your work, even though the question may not explicitly remind you to do so. Clearly label any functions, graphs, tables, or other objects that you use. Justifications require that you give mathematical reasons, and that you verify the needed conditions under which relevant theorems, properties, definitions, or tests are applied. Your work will be scored on the correctness and completeness of your methods as well as your answers. Answers without supporting work will usually not receive credit. Unless otherwise specified, answers (numeric or algebraic) need not be simplified. If your answer is given as a decimal approximation, it should be correct to three places after the decimal point.

Unless otherwise specified, the domain of a function f is assumed to be the set of all real numbers x for which f(x) is a real number.

x -3 0 3 6
f(x) -5 4 1 7
f'(x) -1 2 -2 4

The table above gives values of a twice-differentiable function f and its first derivative f' for selected values of x. Let g be the function defined by

g(x)= f(x^3-x )

Required:
What is the value of g (3)?

Lanie works part-time at Sweet Treats Catering. She earns $13.25 per hour and work 25 hours a
week. She is paid semi-monthly.
a. Calculate her gross pay for 1 paycheck. Show all your math calculations.

Calculate 3cm ,4cm, 10cm and 2cm

What is 5 tens + 5 tens in standard form

If (6, -5) is reflected across the y = -x the new point would be:

A.
(-5, -6)

B.
(5, -6)

C.
(5, 6)

D.
(-5, 6)

I need help on it pls​

who got the answer to this ?
(4x^2+6+7)-(-8x^2-2x+6)

A line is drawn on the coordinate plane that passes through the point (10,1) and has a slope of -0.5. The y-intercept of the line is

For a small charge, you arrange to have the hardware store deliver your purchase for you

You pay for your purchase, plus the sales tax, plus the delivery charge.

In the figure shown, r l l s

plz help. its easy brainliest

Determine whether the equation below has a one solutions, no solutions, or an infinite number of solutions. Afterwards, determine two values of xx that support your conclusion. x=x-5

the slope of a hill 3/190. The Hill has a ride of 400m. What is the horizontal distance covered by the hill?​

Solve 27 * 9


help and explain this to me! im in 6th grade so dont make it to hard