A consumer agency wants to determine which of two laundry detergents, A or B, cleans better. Fifty pieces of fabric are subjected to the same kinds of stains (grass, mud, coffee). Then 25 pieces are randomly assigned to be cleaned with detergent A, and the remaining 25 pieces are cleaned with detergent B. After being laundered, the pieces of fabric are rated on a scale of 1–10, with 1 being the least clean to 10 being the most clean. The mean rating for detergent A is found to be significantly less than the mean rating for detergent B.

Answers

Answer 1

Answer:

B is the better detergent

Step-by-step explanation:

If A has a lower number on the 1-10 scale, that means on average it was closer to the lower end, or the least clean end. This means that A cleans worse than B., and B is better.

Answer 2

The two laundry detergents B cleans better.

Although the questions seems to be tricky at the begging because of a lot of numbers, but actually it is not.

Given to us in the question that, 25 pieces are randomly assigned to be cleaned with detergent A, and the remaining 25 pieces are cleaned with detergent B.

Thus, we can say that the sample size for both detergent A and detergent B is same. Also, the sample is distributed randomly meaning the sample is unbiased (fair).

Also, as given the mean rating for detergent A is found to be significantly less than the mean rating for detergent B. And we know that the mean is the average of a set of given numbers.

Therefore, we can conclude that if detergent A has a lower mean meaning, it has cleaned the clothes with less effectiveness as compared to detergent B.

Hence, Out of the two laundry detergents, B cleans better.

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Related Questions


Pleaseeeeeee help I will mark brainliest

Answers

I agree with Garrett that a negative association is demonstrated since when the y value increases, the x value tends to decrease.

Write an explicit formula for the sequence -13,-6,1,8, ...
A. an= -13n+7
B. an= -13+(n+7)
C. an= -13+7(n-1)
D. an= -13n+7

Answers

Answer:

7n-20 I believe

Step-by-step explanation:

hope this helps

Answer: A

lol need extra characters

i took the test btw

What is the slope of the line y = 7x + 3
-?
1
7
А
B
7
3
8
8
3

Answers

Answer:

7 :)

Step-by-step explanation:

6. You want to go to the movies. A ticket for a movie
cost $10.90. There is a student discount for 20% off
with a student ID. The tax rate charged is 5.75%.
What is the sale price of your ticket? Explain how you
arrived at your answer.

Answers

Answer:

The sale price of your ticket would be $9.22

Step-by-step explanation:

First you subtract 20% off from $10.90

Which is $8.72 , then you add 5.75%

so $8.72 + 5.75% = $9.22

Hope this helps have a nice evening please give me brainliest

A group of physicians conducts a study to find the success
rate of different treatments for an illness. They select one
hospital at random and obtain a list of patients who have
received each treatment. They select every fifth patient on
the list and contact that patient.
What is the sample in this study?
A. Patients who have been diagnosed with the illness
B. The patients from the list who are contacted by the physicians
C. Patients who received one of the treatments at the selected
hospital
D. The patients on the list that the hospital provided to the doctors

Answers

Your answer is B :)

Happy to help!

Answer: B

Step-by-step explanation:

I took the quiz and  got this right, Happy to help!!

Need help solving this equation

Answers

The answer is to your equation is 4

7x + 10 = 6X + 4(-3+3X)​

Answers

Step-by-step explanation:

7x+10=6x+4(-3+3x)

7x+10=6x-12+12x

7x-6x-12x=-12-10

-11x=-22

x=-22/-11

x=2

..sorry if the answer is wrong

Solve for w. -34=-6+w/4

Answers

Answer:

w=−112

Step-by-step explanation:

-34=-6+w/4

Simplify both sides of the equation.

−34=−6+ w /4

−34=−6+ 1 /4 w

−34= 1 /4 w−6

Flip the equation.

1 4/ w−6=−34

Add 6 to both sides.

1 /4 w−6+6=−34+6

1 /4 w=−28

Multiply both sides by 4.

w=−112

Answer:

w = - 112

Step-by-step explanation:

-34=-6+w/4

1. Add 6 on both sides

-34 + 6 = -6 + 6 + w/4

-28 = w/4

2. Multiply 4 on both sides since it's the opposite of dividing

-28 * 4= w/4 * 4

- 112 = w

Hope this helped!

The dimensions of a drawer are:
height = 2x + 3 inches, length 52 + 2 inches and
width 3x – 2 inches. What is the volume of the drawer?

Answers

Answer:

Hope you find the help you need on this sorry , i couldnt find the answer :( good luck !!

Step-by-step explanation:

On a bulletin board the principal Miss Gomez put 115 photos of the fourth grade students in her school. She puts the photos in five equal rose how many photos did she put in each row?

Answers

Answer:

naruto

Step-by-step explanation:

Evaluate 1/3 to the power of 3

Answers

The answer is 0.0369 (4 d.p)
Take 1/3 and convert to a decimal which is 0.333. Then put the decimal to the power of 3. In which you will get 0.0369 if you change to a fraction it will be 369/1000.
Hope it helps.

50 POINTS!!!! What's 29 4/5% of $5.64 Round your answer to the nearest cent.

Answers

$1.68 yeh yeh yeh yeh yeh

Which graph represents the solution to the system of inequalities?




{y<−4x+1
{y≥−14x

Answers

Answer:

1st graph on line 2

Step-by-step explanation:

What is the equation for calculating the area of a triangle?

A = 1/4 base · height
B = length · width
C = pi · height
D = 1/2 base · height

Answers

Answer:

A= 1/2 base*height

Step-by-step explanation:

: )

The correct equation for calculating the area of a triangle is D = 1/2 base · height.

The equation for calculating the area of a triangle is D = 1/2 base · height. This formula represents the most commonly used method for finding the area of a triangle.

To use this formula, you multiply the base of the triangle by its corresponding height, and then divide the result by 2.

This is because the area of a triangle is equal to half the product of its base and height.

By dividing by 2, we account for the fact that a triangle is essentially half of a parallelogram.

Therefore, the correct equation for calculating the area of a triangle is D = 1/2 base · height.

Learn more about the triangles here:

https://brainly.com/question/17997149

#SPJ4

A puzzle box has a height of 27 centimeters. It has a base with an area of 220 square centimeters. What is the volume, in cubic centimeters, of the puzzle box?

Answers

Answer:

5940 cm^3

Step-by-step explanation:

Step one:

given data

Height = 27 cm^3

Area= 220 cm^2

Required

the volume of the box

Step two:

the expression for volume is

V= Area* height

v= 220*27

V= 5940 cm^3

Write the equation of the function g(x) if g(x) = f(x - 3) +1 and f(x) = x3 + 1.

Answers

Answer:

Solution,

f(x) = [tex]x^{3}[/tex] + 1

Put x = x - 3,

f(x - 3) =  [tex](x-3)^{3}[/tex] + 1

Now,

g(x) = f(x - 3) + 1

or, g(x) =[ [tex](x-3)^{3}[/tex] +1 ] + 1

or, g(x) = [tex]x^{3} -9x^{2} + 27x - 1 + 1+1[/tex]

or, g(x) = [tex]x^{3} - 9x^{2} +27x + 1[/tex]

Help solve inequality

Answers

Answer:

n ≥ -95

Step-by-step explanation:

[tex]\frac{n}{-5}[/tex]  -4 ≤ 15    

[tex]\frac{n}{-5}[/tex] ≤ 19             add 4 to 15

n ≥ -95            multiple -5 to 19; sign flips when multiplying or dividing an inequality

A weather report stated that the monthly rain amounts for the past three months were 15.82 inches, 17.4 inches, and 9.56 inches.
What is the total amount of rainfall for the three months?
A. 27.12 inches
B. 41.178 inches
C. 42.42 inches
D. 42.78 inches

Answers

Answer:

42.78 inches

Step-by-step explanation:

The anount of rainfall for the past three months are

15.82 inches

17.4 inches

9.56 inches

Therefore the total amount of rainfall for the three months can be calculated as follows

= 15.82+17.4+9.56

= 42.78

Hence the total rainfall for three months 42.78 inches

Helppp Plzz!!!!!!!!! 20PTS and Brainliest!!!!!!!

Answers

Answer: 37.5

Step-by-step explanation:

Use a proportion for this type of problems

What is the simplified form of the following expression?

Answers

The right answer is the third one.

Ramona went out with her 3 sisters, they spent $58 plus
9% tax on their meal. They also left a 15% tip. If they divided
up the bill evenly, how much did each of them spend?

Answers

Problem:

Ramona went out with her 3 sisters, they spent $58 plus 9% tax on their meal. They also left 15% tip. If they divided up the bill evenly, how much did each of them spend?

Solution:

[tex] \frac{58 + 58(9\% + 15\%)}{3} [/tex]

[tex] = \frac{58 + 58(0.09 + 0.15)}{3} [/tex]

[tex] = \frac{58 + 58 \times 0.24}{3} [/tex]

[tex] = \frac{58 + 13.92}{3} [/tex]

[tex] = \frac{71.92}{3} [/tex]

[tex] = 23.97[/tex]

Answer:

Each of them did spend $23.97

#CarryOnLearning

#AnswerForTrees

#BrainlyBookSmart

i giveee brainlilstttt

Answers

Answer:

R would become (-8,10)

S would become (-7,10)

T would become (-7,0)

U would become (-8,0)

Answer:

wow man how nice thanks

Step-by-step explanation:

woooooooooooooow ;)))

estimate the quotients 6.15 ÷ 31​

Answers

Answer:the answer is 19.10 or 20

Step-by-step explanation:

–4x-2y=-2
x-2y=9
what do you get if you subtract the second from the first

Answers

Answer:

-4×-2y=2

-4×+8y=-8

6y=6

y=1 then you the value of y and to put in any one equestion

PLEASE ANSWER
At Shoe Carnival a pair of shoes costs $83.05. How much do the shoes
cost after a 15% discount? *

Answers

Answer:

$70.59

Step-by-step explanation:

15% of $83.05 = 12.4575$83.05 - $12.4575 = $70.59

I hope this helps!

answer: $70.59

explanation:
15% = .15
1 - .15 = .85
83.05 * .85 = 70.59

how do i get rid of the stupld

Answers

Answer:

wdym get rid of the "stupld"

Step-by-step explanation:

Answer:

Study, ask teachers questions, email, use this app, etc.

Step-by-step explanation:

If you study for a test/exam. Look over the study guide and recite it for 20 minutes and take a 10 minute break. Then pretend you're explaining the subject to someone for 20 minutes and take a 10 minute break. Then go over the study guide again and see if you missed anything while explaining and then explain it again but this time with the things you missed. Repeat if necessary. Flashcards on quizlet n stuff can help too.

how to tell if your answer is reasonable

Answers

Answeri dont now

Step-by-step explanation:

d + 5.5 = 10. Solve for d.

Answers

Answer:

4.5

Step-by-step explanation:

d=10-5.5

d= 4.5

we just need to minus 10 with 5.5 so that we can find d

It is Monday.

/: There is chicken for lunch.

/

Write the inverse in if-then form.

Answers

The proper way to write this sentence would be:

If it is Monday then there is chicken for lunch.

May I have brainliest please? :)

ABCD is a quadrilateral with AB equal and parallel to DC. prove that AD is equal and parallel to BC​

Answers

Answer: see below proof

Step-by-step explanation:

Imagine a diagonal line AC

If AB = DC and AB // DC then angle BAC =

Angle ACD Alternate Interior angles theorem.

Then if AB = AD and angle BAC = angle ACD and AC = AC then triangle ABC is congruent to triangle CDA.

If triangle ABC is congruent to triangle CDA then AD = BC because congruent parts of congruent triangles are congruent.

If triangle ABC is congruent to triangle CDA then angle ACB = angle CAD because congruent parts of congruent triangles are congruent.

If angle ACB = angle CAD then AD // BC because of the alternate interior angles theorem.

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