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
OlgaM077 [116]
3 years ago
12

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).
Mathematics
1 answer:
svetlana [45]3 years ago
3 0

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.

You might be interested in
Kelly buys shoes with all her money. She only has $150. One pair of shoes is $40. The other 2 pairs are for her sisters they are
irina1246 [14]

Answer:

$55

Step-by-step explanation:

its $150 - $40 = $110

$110 / 2 = $55

3 0
3 years ago
Read 2 more answers
Verbal expression for 9a2
Brilliant_brown [7]
If the 2 is little and on top of the a, then it's called "nine a squared."
4 0
3 years ago
Read 2 more answers
How do you tell if a line is parallel perpendicular or neither?
cluponka [151]
You can tell that a line is parallel if the lines can go on forever without crossing or intersecting. A line is perpendicular when the lines intersect at a right angle. If the slopes are either equal or negative reciprocals, they cannot be parallel or perpendicular.

Hope this helps you!
3 0
3 years ago
Simplify the expression of 1.2x + 3y - 3 - 4.7x by combining like terms. ASAP
EastWind [94]

Answer:

-3.5x + 3y - 3

Step-by-step explanation:

1.2x + 3y - 3 - 4.7x

=> -3.5x + 3y - 3

Therefore, our simplified expression is -3.5x + 3y - 3

Hoped this helped.

5 0
2 years ago
Read 2 more answers
PLSS HELP DUE TMR PLSS 25 POINTS I BEGG
Maksim231197 [3]

Answer:

7tifi6diyd8ydiy

Step-by-step explanation:

ust75dutsjtsutxxhtshfxhrsfhzyrahrsursusutsutsuttus5usutsutxtu

3 0
3 years ago
Other questions:
  • For Halloween, Isabel received 5 6/7 pounds of candy in the first hour and another 3 4/9 pounds the second hour. How much candy
    15·2 answers
  • I NEED HELP ASAP! :)
    14·1 answer
  • H + 9.7 = -9.7 what is this answer
    12·2 answers
  • Find the m∡B to the nearest tenth of a degree if cos B = 0.8926 and ∡B is an acute angle
    9·1 answer
  • What is the equation for n in 5n+10=n+4
    8·1 answer
  • What is the length of the hypotenuse
    9·2 answers
  • a rectangle box has length 12 inches, width 15 inches, and a height of 17 inches. Find the angle between the diagonal of the box
    7·1 answer
  • Write and solve a proportion to answer the question.<br> What number a is 25% of 7/8?
    5·1 answer
  • Write a real world problem for the equation 8x+2=26
    14·1 answer
  • What is the solution to the system of equations below? x 3 y = 15 and 4 x 2 y = 30 (6, 3) (3, 6) (7, –6) (–6, 7).
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!