Presbycusis is the gradual hearing loss that occurs as a person ages. An estimated one-quarter of Americans between the ages of 65 and 75 and three-quarters of those older than 75 have some degree of hearing loss.

An audiologist is interested in the efficacy of three different types of hearing aids. He gathers three groups of hearing-impaired clients: One group receives analog hearing aids, which convert sound waves into amplified electrical signals. The second group receives digital hearing aids, which use directional microphones to control the flow of sound and convert the sound waves into numerical codes before amplifying them. The third group receives cochlear implants. The results come in, and a statistician conducts an analysis of variance.

The _____________ is that there is no difference between the population means (in other words, there is no treatment effect).
The ____________ is that at least one of the population means is different from another (in other words, there is an effect of at least one of the treatments).

Answers

Answer 1

Answer:

The answer is the "Null hypothesis and Alternative hypothesis".

Step-by-step explanation:

The null hypothesis is almost like a hypothesis test, which indicates the certain demographic characteristics which aren't varied.

The alternative presumption will be that the hypothesis besides making predictions is opposite to the void assumption. Its posts are generally taken as a result of a meaningful effect.

Difference:

The null hypothesis is indeed a gross generalization, which specifies there is no relation between different phenomenons under evaluation. There is no association between the two groups. An alternate solution hypothesis is a statement, that defines there is a relation between different chosen variables in this study.


Related Questions

Two numbers have prime factors of 2, 3, 5, and 11 that they share. What is the greatest common factor of the two numbers?

Answers

Answer:

The greatest common factor (GCF) of the two numbers is 330.

Step-by-step explanation:

Given;

prime factors of the two numbers = 2, 3, 5, and 11

The greatest common factor (GCF) of the two numbers is given as;

Greatest Common Factor (GCF) = 2 x 3 x 5 x 11

Greatest Common Factor (GCF) = 330

Therefore, the greatest common factor (GCF) of the two numbers is 330.

Answer:

330

Step-by-step explanation:

I really need help real quick !

Can you conclude that the following is a rhombus, rectangle, or square?
A parallelogram has two pairs of adjacent sides that are congruent.

Answers

B is the answer and u can use it

The mentioned parallelogram is a rhombus.

What is Parallelogram?

A parallelogram is defined as a special type of quadrilateral which has both pairs of opposite sides parallel and equal.

A parallelogram is a square and a rhombus is a square.

However, not all parallelograms are rhombuses, and not all rhombuses are squares.

A parallelogram has two pairs of adjacent sides that are congruent.

The adjacent sides of a parallelogram must be equal, and the angles formed by the four sides must be 90 degrees for a rhombus to be a square.

We are aware that the adjacent sides are equal in the context of the statement, but we are unsure of whether or not the angle formed by the sides is 90 degrees.

Hence, the mentioned parallelogram is a rhombus, which we can state with certainty, but it may or may not be a square.

Learn more about parallelogram here:

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488 points for defeating 61 enemies

Answers

Divide 488 by 61 to find the unit rate.

488/61 = 8

You get 8 points for defeating each enemy.

Hope this helps

Match the functions f(x, y, z) with the description of their gradients. No reasons needed.
(a) x2 + y2 + z2
a. points radially outward from the z-axis
b. points radially inward toward the z-axis
c. points radially outward from the origin
d. points radially inward toward the origin
(b) x2 + y2
a. points radially outward from the z-axis
b. points radially inward toward the z-axis
c. points radially outward from the origin
d. points radially inward toward the origin
(c) 1/x2 + y2 + z2
a. points radially outward from the z-axis
b. points radially inward toward the z-axis
c. points radially outward from the origin
d. points radially inward toward the origin
(d) 1/x2 + y2
a. points radially outward from the z-axis
b. points radially inward toward the z-axis
c. points radially outward from the origin
d. points radially inward toward the origin

Answers

Answer:

1. C points radially outward from origin

2. A. Points radially outward from z origin

3. D. Radially inwards toward origin

4. B. Inwards towards the z axis

Step-by-step explanation:

1.

X²+y²+z² = f(x,y,z)

Vector P<x,y,z>

2<x,y,z> = 2p

The answer is c points radially outward from origin

2.

X²+y² = f(x,y)

<2x,2y,0>

Points radially outward from z axis

3.

D. Points radially inwards toward origin

4.

B. Points radially inwards toward the z axis.

Please check attachment for solutions to answers 3 and 4

Plz answer I will mark u brainiest!!!!

Answers

Answer:

65

Step-by-step explanation:


(5/9)^2
Order of operation

Answers

Answer:

Use PEMDAS.

Parenthesis.

(5 times 9) That's 45.

Exponents.

45^2

45x45

2025

The answer is 2025.

Select the correct answer. Which function has exactly three distinct real zeros? A. h(x) = (x − 9)2(x − 4)2 B. h(x) = x(x + 7)2 C. h(x) = (x − 3)(x + 1)(x + 3)(x + 8) D. h(x) = (x − 2)2(x + 4)(x − 1)

Answers

Answer:

if you have LOF it is explained very well in there. When I was doing that kind of problem that was so helpful. Hope you find the same.

Step-by-step explanation:

Answer:

attached.

Step-by-step explanation:

I need help I don't understand ​

Answers

The answer is $10.25

Answer:

96.9

Step-by-step explanation:

A little bit of this and allit;e bit of that

5 1/3 minus -2 2/3 someone please answer

Answers

Answer:

8

Step-by-step explanation:

Answer:

2.7

Step-by-step explanation:

Which of these is the triangle proportionality theorem? First person to answer CORRECTLY gets brainliest

Answers

Answer: A.

Step-by-step explanation: Brainliest plz

Enter the equivalent distance in km in the box.

1 km = 1000 m

1 m = 100 cm

35,000 cm =
km

Answers

Answer:

0.350 km

Step-by-step explanation:

Hi there !

35000 cm = 35000/100 m = 350 m

350 m = 350/1000 km = 0.350 km

Good luck !

2 2/3 divided by -8/9

Answers

Answer:

-3

Step-by-step explanation:

simplify the expression

Answer:

-3

Step-by-step explanation:

what is 50 divided by 6. explain

Answers

Answer:

8.333333333 repeating

Step-by-step explanation:

do the equation for 50/6 and you will get 8.3333 repeating

The quotient is 50 ÷ 6 = 8 1/3, which represents 50 divided by 6 equals 8 remainders 3 or written as a mixed number, 8 1/3.

To calculate 50 divided by 6, we perform a division operation to determine how many times 6 can be evenly divided into 50.

When dividing, we start with the largest possible quotient, which is 8 in this case (as 8 * 6 = 48).

We subtract 48 from 50, resulting in a remainder of 2. Since the remainder is not zero, we need to continue the division.

Now, we bring down the next digit, which is 0, making the dividend 20. We divide 20 by 6, which gives us a quotient of 3 with no remainder.

Therefore, 50 divided by 6 equals 8 remainders 3, or written as a mixed number, 8 1/3.

The quotient represents the number of times 6 can be evenly divided into 50, and the remainder represents the amount left over.

To learn more about the division operation click here :

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1) In a yoga class, 75% of the students are women. There are 24 women in the class. How many students are in the class?

A. 18
B. 30
C. 32
D. 42
----------------------------------------------------------------------------------------------------------------------------
2) It is Attached below:

Answers

Answer:

For the first question: C. 32

For the second question: D. 15

Step-by-step explanation:

If 75% of the students are women, and there's 24 women, first you would have to divide 24 by 3. This equals 8. So, add 8 to 24 because 8 is 1/4th of the yoga class. 8 + 24 = 32.

If you mark all of the coordinates and draw lines to make a rectangle, then count all the units until the end of the line, the longer sides are 15 units and the shorter sides are 11 units.

is this correct I made an educated guess because I don't really understand it

Answers

Answer:

Option (2)

Step-by-step explanation:

A function 'f' has been given as,

f(x) = 3x + 1

And the inverse of this function is,

[tex]f^{-1}(x)=\frac{x-1}{3}[/tex]

We have to find the value of f(2).

So we will use the expression: f(x) = 3x + 1

By substituting x = 2 in this function,

f(2) = 3×2 + 1

     = 6 + 1

     = 7

This result tells us the value of the function at x = 2.

Therefore, Option (2) will be the answer.

The correct Standard Form of the equation y=−1/3x+23/9

Answers

Answer:

3x + 9y = 23

Step-by-step explanation:

Please Solve Brainliest and 10 points!

Answers

Answer:

x=20°

Step-by-step explanation:

statements:                                        

1.) m<DOB = m<DOE + m<BOE (or m<EOB)    

2.) m<DOB = 90°+x

3.) m<AOC = m<DOB

4.) 110° = 90° + x

5.) x = 20°

reasons:

1.) given

2.) substitution

3.) vertical/reflexive

4.) substitution

5.) algebra

i need help on this question this is what i need help with

416+ 523⎯⎯⎯⎯⎯⎯⎯⎯⎯

Answers

Answer:

416+523=939

Step-by-step explanation:

can i pls get a brainlieast for this and a thank you pls and a 5 stars

Answer:

9 3/9

Step-by-step explanation:

Word division problem using 5 as the divisor

Answers

Answer: a divisor is a number by which another number is to be divided.

There are 20 slices of pizza. There are 5 people. How many slices does each person get?

Answer: There were 50 chocolate bars on display at the candy store. All 50 chocolate bars were distributed evenly between 5 children. How many chocolate bars would each child receive?

find m ABC (2x) (5x+5)

Answers

Answer:

=130

Step-by-step explanation:

(2x) (5x+5) = 180

7x + 5 = 180

7x = 175

x = 25

5(25) + 5 = 125 + 5 = 130

Hope this helps (:

PLZ HURRY IT'S URGENT!!!
What is the slope of the line? y=x−5
options:
undefined
1
0
-5

Answers

Answer:

1

Step-by-step explanation:

Steven earns extra money babysitting. He charges $34.50 for 6 hours and $46.00 for 8 hours.

Enter an equation to represent the relationship. Let x represent the number of hours Steven babysits and y represent the amount he charges.

Answers

Answer:

y = 5.25x + 4

Step-by-step explanation:

(hours, money)

(6, 34.50)

(8, 46.00)

Slope: change in y/change in x

11.5/2

5.25

Y - intercept: b

46 = 5.25(8) + b

46 = 42 + b

4 = b

Put it all together

Evaluate each expression for a= -2, b = -4.1, and c=5.
1) a - b + c

2) -c + b - a

3) -a + ( -c)

Answers

Answers:

1) 7.1

2) -7.1

3) -3

Plug in the numbers

The endpoints of EF¯¯¯¯¯ are located at E (−3, 2) and F (3, 8). Point D divides EF¯¯¯¯¯ such that ED : DF is equal to 1 : 3. For each box, select the values in the dropdown that make the statement true. The x-coordinate of point D is and the y-coordinate of point D is

Answers

Answer:

[tex]D(x,y) = (-1.5,3.5)[/tex]

Step-by-step explanation:

Given

[tex]E = (-3,2)[/tex]

[tex]F = (3,8)[/tex]

[tex]ED: DF = 1 : 3[/tex]

Required

Determine the coordinates of D

This is calculated as thus:

[tex]D(x,y) = (\frac{mx_2 + nx_1}{m+n},\frac{my_2 + ny_1}{m+n})[/tex]

Where:

[tex](x_1,y_1) = (-3,2)[/tex]

[tex](x_2,y_2) = (3,8)[/tex]

[tex]m:n = 1:3[/tex]

[tex]D(x,y) = (\frac{mx_2 + nx_1}{m+n},\frac{my_2 + ny_1}{m+n})[/tex]

[tex]D(x,y) = (\frac{1 * 3 + 3 *-3}{1+3},\frac{1 * 8 + 3 * 2}{1+3})[/tex]

[tex]D(x,y) = (\frac{-6}{4},\frac{14}{4})[/tex]

[tex]D(x,y) = (-1.5,3.5)[/tex]

if m 2 =6x+8 and m 6 = 8x-6, find the value of x so that l is parallel to m

Answers

Answer:

[tex]x = 7[/tex]

Step-by-step explanation:

Given

[tex]m_2 = 6x + 8[/tex]

[tex]m_6 = 8x - 6[/tex]

Required

Determine x when both lines are parallel

For parallel lines, slopes must be equal.

i.e.

[tex]m_1 = m_2[/tex]

In this case,

[tex]m_6 = m_2[/tex]

Substitute values for m6 and m2

[tex]8x - 6 = 6x + 8[/tex]

Collect Like Terms

[tex]8x - 6x = 8 + 6[/tex]

[tex]2x = 14[/tex]

Solve for x

[tex]x = 14/2[/tex]

[tex]x = 7[/tex]

Answer:7

Step-by-step explanation:

65% of what is 39? ​

Answers

Answer:

The answer is 25.35

Step-by-step explanation:

Hope this helps:)

Answer:

60

Step-by-step explanation:

65 % of 60 = 39

Ella played a math game and had the five cards shown.
7 0 -4 -10

Her score was the sum of the numbers on these five cards. What was Ella’s score?
3


23

−5


Not here

Answers

4Step-by-step explanation:

Which graph represents a function?

Answers

The third graph represents a function because it passes the vertical line test (VLT). (:

How many lines of symmetry does this figure have?


Pls help

Answers

Answer:

4

Step-by-step explanation:

This figure has 4 lines of symmetry

If A is the least common multiple of 12, 24, and 36, and B
is the lowest prime number, what is the sum of A and B ?

F.
3
G.
4
H.
73
J.
74
K.
145

Answers

Answer:

74

Step-by-step explanation:

A= Least common multiple of 12,24,36

Factors of 12 = 2*2*3

Factors of 24 = 2*2*2*3

Factors of 36 = 2*2*3*3

A = 2*2*2*3*3 = 72

B = Lowest prime number = 2

A+B = 72+2 = 74

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Please help brainiest!! Lee is a teacher at a local high school who wanted to assess whether or not dogs physically resemble their owners enough for people to be able to correctly match a dog to their owner better than if just guessing. Lee, who is also a dog owner, showed pictures of two dogs to her class of 16 students. One photo was of the teacher's dog (Yoda) and the other photo was of a dog the teacher had never met. The students were asked to guess which dog was actually the teacher's. If dogs do not physically resemble their owners, the students would get a correct match with probability 0.50. It turned out that 14 of the 16 students correctly picked out the teacher's dog. Does it appear that the population proportion of people who can correctly match a dog to their owner (out of two options) is better than just guessing? 1.2.A poem with 14 lines and a specific rhyme schemeVerse with an irregular rhythm and no specific meter speed is the ______ an object travels over a given time period. Jeanne took her two-year-old granddaughter to a beauty parlor for a haircut, but when thestylist picked up scissors to trim Abigail's lovely red curls, Jeanne scooped up the child and ranfor the door.O ... haircut but when ...O ... haircut; but, when ...O ... haircut, however, when ...o No change is necessary. _____________ was to the Northern economy like _____________ was to the Southern economy. Farming / Industry Agriculture / Machinery Industry / Agriculture Anti-Slavery / Slavery Question 6 of 10Which economic tool would most likely be used as part of a contractionarymonetary policy?A. Lowering interest on reservesB. Reducing the discount rateC. Raising the reserve requirementD. Buying treasury securities 60 point!!!Instructions-Give a real life example of each of Newton's Laws in action. Be sure to specificy which law yourexample is linked to.Give examples with pulleys help............. 10 points what would happen if all countries in the world depended only on wind power? PLEASE HELP IF YOU GET RIGHT I GIVE BRAINLIEST What major question did the federal government face regarding Confederate leaders during Reconstruction?Should leaders of the Confederacy be enslaved?Should leaders of the Confederacy be impeached?Should leaders of the Confederacy be punished?Should leaders of the Confederacy be reeducated? Assume the perpetual inventory; system is used unless stated otherwise. Round all numbers to the nearest whole dollar unless stated otherwise. Journalizing purchase transactions Howie Jewelers had the following purchase transactions. Journalize all necessary transactions. Explanations are not required.Jun. 20 Purchased inventory of $5,000 on account from Silk Diamonds, a jewelry importer. Terms were 2/15, n/45, FOB shipping point. Jun. 20 Paid freight charges, $400. Jul. 4 Returned $600 of inventory to Silk. Jul. 14 Paid Silk Diamonds, less return. Jul. 16 Purchased inventory of $4,400 on account from Shanley Diamonds, a jewelry importer. Terms were 2/10, n/EOM, FOB destination. Jul. 18 Received a $300 allowance from Shanley Diamonds for damaged but usable goods. Jul. 24 Paid Shanley Diamonds, less allowance and discount. BRAINLIEST PLS HELP! Balance this equation and be sure to show your work. NaCl + H2O Cl2 + NaOH + H2 Graph the linear function f(x)=36x story about fake news?? Which two of the following correctly describe what a gene is? A packet of genetic information that can be passed down from one generation to the next A DNA molecule The entire collection of genetic information in a given species A section of DNA that provides instructions for building a specific protein I'm not sure GUYS ANSWER ANYTHING PLEASE I NEED THIS FOR TODAY 1. How did english become so prevalent throughout the world? Describe historical, economic, and social reasons for this. 2. What are the benefits of English becoming the Worlds Lingua Franca where millions, even billions, would speak English as a first or second language. Explain the economic, social and political benefits.3. What are the downfalls of English becoming the Worlds Lingua franca? Explain the economic, social and political effects. that doesn't give the answer What is the equation of the ine that has a slope of 4 and passes through the point (3, -10) ?