A firm tested the durability of four different types of tires by having 4 Cadillacs each randomly equipped with one of the types of tires. In similar fashion, 4 Fords were used, each randomly equipped with one of the tire types. In a like manner, 4 Volkswagens were each randomly outfitted with one of the four tire brands. Then each of the twelve cars ran over a test track until the tires showed signs of serious wear. At that point the average mileage of the three cars using one type of tire was compared to the average mileage of the three cars using the second type of tires, and so on. This design is:

Answers

Answer 1

Answer:

Randomized block design

Step-by-step explanation:

In the scenario described above, the subjects which are the different car types are grouped into fixed units of 4 called blocks with each unit then assigned randomly to a particular treatment condition, which are the 4 different types of tire. In the end, the mean mileage for each block is taken and compared to that of the other blocks. This type of research design improves the reliability of the result obtained as it also eliminates the occurrence of systematic error in the course of our experiment.


Related Questions

...........................................................
.

Answers

Answer:

3hope it help

Step-by-step explanation:

HELP!!! PRECALC Continuity problem, will give brain liest, thank you!!!

Answers

Answer:

Go to algebraic calculator

Step-by-step explanation:

Then go to Microsoft calculator it has everything

brainliest?

21/24 x 16/24, guys plz help..

Answers

Answer:

g00gle

Step-by-step explanation:

click new tab and type in 21/24 x 16/24

what is the descender order of f(x)=5x2+4x-11

Answers

Answer: Hello Luv.....

f(x)=5x2+4x−11

Step-by-step explanation:

Hope this helps.

Mark me brainest please.

Anna ♥

Using the box plot of quiz scores below, what percent age of students scored above 85?

Answers

Answer:

that would be B.

Step-by-step explanation:

its at the end and it is only 25% of it there is no way it could be 75% or 50% so the best choice would be 25% B

what is the range of the given data above?
a.26
b.28
c.30
d.34
what is the width of tye class interval of the given data above
a.4
b.5
c.6
d.7​

Answers

the range would be 8.

Range= biggest number minus the smallest number! hope this helps! i

The range of the given data is 34.

The width of the class interval in the given data is 4.

What is the range?

Range is the difference between the highest and lowest values of a set of observations

Range =Upper-class boundary of the highest interval – Lower class boundary of the lowest interval

79 - 45 = 34

What is the class width?

The class width is the difference between the upper bound and lower bound.

Class width : 49 - 45 = 4

To learn more about range, please check: https://brainly.com/question/12372689

PLZ HELP I BEG UU !! 50 POINTS AND BRANLIEST>

Answers

Answer: 102.5

Step-by-step explanation:

Area of triangle: 8*6=48, 48/2=24

Area of semicircle: 2pir^2=2pi(5)^2=157

Because its semi circle it is 157/2 which equals 78.5

Total area:24+78.5=102.5

Answer:

102.5

Step-by-step explanation:

Semi circle = 78.54 ≈ 78.5

Using formula A = πr²

Area triangle = 24

Using formula A = 1/2(bh)

Sum = 78.5 + 24 = 102.5

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

answer this for points and brainilest

Answers

Answer:

e = -2

Step-by-step explanation:

Hey man, I got straight A's in math all year so here's the answer!

Good Luck! :)

Can you check and see if I am right please?

Answers

Answer:

Mhm correct

Step-by-step explanation:

Alright ima stop being a stalker now...

Yes you got it right:)

Green line equals to:
4=?

The length of the black minus the blue line:
q-2

Which you get 4=q-2 when you combine.



You also got the second question right because 4+2 is 6

What is the volume of the figure down below?

Answers

The answer is C. All calculations of a cone or the cone equal up to 353.77. Hope this helps!

Answer:

C is correct....

Good Luck!!!

Helpppp plsssy’all I need help

Answers

Answer:

the answer c

Step-by-step explanation:somebody told me the asnwer

Which operation would be last when solving the inequality -5x + 9 < -6

Answers

Answer: divding both sides by -5

Step-by-step explanation:

Subtract 9 from both sides.

−5x+9−9<−6−9

−5x<−15

Step 2: Divide both sides by -5.

−5x/−5<−15/−5

x>3

HELP I need the know if it's going across the y or going across the x don't send no FILE ONLY ANSWER IF YOU REALLY KNOW question 6 is what I need help on btw !!

Answers

both the x and y line

Help me please! Only if you know:)

Answers

Answer:

a,b,c,d

Step-by-step explanation:

ajjskakskskkdkdks

Find the measure of each exterior angle of the polygon.

Answers

Answer:

120 degrees for each angle

Step-by-step explanation:

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PLS HELP! WILL GIVE BRAINLIST!!!!

The following expression is a polynomial: 3x^2y^2 - 2xy

Part A: Classify the polynomial according to its number of terms. Explain how you know your answer is correct.

Part B: Classify the polynomial according to its degree. Explain how you know your answer is correct

Answers

Answer:

It is a trinomal because there is 3 terms

It is a quadratic because the highest degree is x^2

All in all, It is a Quadratic Trinomal

Step-by-step explanation:

What is the formula to find the rate of discount when M.P and S.P after discount is given.

Answers

Answer:

Selling Price = M.P. – Discount = 100 – 5 = Rs. 95. If S.P. is Rs 95, then M.P. is Rs. 100.

Answer:

mp=sp+d

Step-by-step explanation:

mp- marked price

sp=selling price

d=discount

Ted earned $4,300 from his summer internship that he plans to invest so that he can buy a used car after three years. Ted chooses a bank that offers 5.5% compounded quarterly. Can Ted buy a car that costs $4,700 after three years? Round your numbers to the nearest cent.

Answers

Answer: Yes he will be

Step-by-step explanation:

To find out if Ted can afford the car, find the future value of $4,300 in three years.

First convert the number of years and rates to quarterly values as this is the compounding period:

Term = 3 * 4 quarters = 12 quarters

Rate = 5.5% / 4 = 1.375% per quarter

Future value = Amount * ( 1 + rate) ^ term

= 4,300 * ( 1 + 1.375%)¹²

= $5,065.69

Considering that Ted makes $5,065.69 in 3 years, he will be able to buy a car that costs $4,700.

points, segments, rays and lines​

Answers

Answer:

B, E

Step-by-step explanation:

The lines at the top represent line, ray, or segment.

Since line UV is a segment, it includes the normal line. And, you can flip UV to VU so...B and E!

Use the Law of Cosines to find a. Round answer to the nearest tenth

Answers

Answer:

Step-by-step explanation:

can someone help solve thsi

Answers

Answer:

50 degrees!!!!!!!!!!!!!!!

Answer:

50 degrees

Step-by-step explanation:

Yeahhhhhh 50 degrees yessss sir

Help please .............

Answers

Answer:

i believe it would be D

Step-by-step explanation:

Earth's radius is approximately 3960 miles. What is the approximate surface area of
Earth in terms of ?

Answers

Answer:

196.9 million mi^2

Step-by-step explanation:

Help plz..And No links!! I repeat No links!!

Answers

Answer:

The answer is 276.32 square yards.

Step-by-step explanation:

To solve for the surface area of a cylinder, use the surface area of a cylinder formula, which is SA= 2[tex]\pi[/tex]rh + 2[tex]\pi[/tex][tex]r^{2}[/tex]. However, instead of using ([tex]\pi[/tex]), 3.14 will be used.

Next, plug in the information from the question into the formula. The formula will look like SA= 2(3.14)(4)(7) + 2(3.14)([tex]4^{2}[/tex]). Then, solve the equation, and the final answer will be 276.32 square yards.

Write an equation of the line below ?

Answers

Answer:

-2/6 x -2

Step-by-step explanation:

the slope is -2/6 and y int is -2

Find the volume (show work)

Answers

V = 1/3 × base × height

V = 1/3 × ( 8 × 8 ) × 7

V = 1/3 × 64 × 7

V = 448/3

V = 149.33333

V = 149.3

kaitlin received a $70 gift card for a coffee store. she used it in buying some coffee that cost $7.69 per pound. after buying the coffee, she had $39.24 left on her card. how many pounds of coffee did she buy?

Answers

Kaitlin bought 4 pounds of coffee.

70-39.24=30.76
30.76 ÷ 7.69= 4

Michelle’s house is 22 miles due north of Jan’s house and 30 degrees northeast of Richard’s house. Richard’s house is due east of Jan’s house. How far is it from Michelle’s house to Richard’s house?

Answers

Answer:

Michelle’s house is 44 miles to Richard’s house.

Step-by-step explanation:

The distance can be found out by using the trigonometric ratio of sine theta

Sine theta= Perpendicular/ Hypotenuse

We know the values of hypotenuse and theta

Sine 30 = 22/ Hypotenuse

Hypotenuse= 22/ sine 30

Hypotenuse= 22/0.5

Hypotenuse = 44

The hypotenuse marks the distance between Michelle’s house to Richard’s house. Due east means counter clockwise rotation from east.

Michelle falou que tem 5 anos e que sua irmã tem 13 e seu pai 35 e sua mãe tem tres anos amenos que seu pai .Quantos anos a família tem ao total?

Answers

Responder:

85 anos

Explicação passo a passo:

Dado :

Idade de Michelle = 5 anos

Idade da irmã = 13 anos

Idade do pai = 35 anos

Idade da mãe = idade do pai - 3 = 35 - 3 = 32 anos

Idade total se a família:

(Idade de Michelle + idade da irmã + idade da mãe + idade do pai)

(5 + 13 + 35 + 32) = 85 anos

The scatter plot shows the amount of sleep of aria got the night before a test and her test scores. What type of relationship do u see between amount of sleep and test scores?

Answers

Where’s the scatter plot
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