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
zloy xaker [14]
3 years ago
7

There are two main brands of ultrasonic humidifiers. Suppose a simple random sample of 125 humidifiers is selected from each bra

nd. For each sampled humidifier, the output of moisture (in oz) was measured in a controlled chamber. The average measurement for the humidifiers of the first (resp. second) brand was 12.7 (resp. 12) and the corresponding standard deviation was 2.5 (resp. 2). (a) Obtain an approximate 95% confidence interval for the difference between the average output among all humidifiers of the first brand and the average output among all humidifiers of the second brand. Does it include 0? (b) Test the hypothesis that there is no difference between the average outputs of the two brands at a 5% significance level.
Mathematics
1 answer:
Elina [12.6K]3 years ago
8 0

Answer:

Step-by-step explanation:

Download docx
You might be interested in
F(x)= 2x^3 + 5x^2 -x -6 is divided by x+1
eimsori [14]

Step-by-step explanation:

substitute x= -1 into the equation to get the remainder

remainder= -2

the remainder is not a fraction

no, it is not a factor since its remainder is not zero

8 0
2 years ago
The slope that passes through the points (0 3) and (5 13) is
Alex777 [14]

Answer:

This is a positive slope

Step-by-step explanation:

Plug In:

Formula = y^2 - y^1 / x^2 - x^1

13 - 3 / 5 - 0

10/5

Slope = 2

5 0
2 years ago
Can someone help me how to solve this?
Assoli18 [71]

Answer:

x > -5  in the answer


Step-by-step explanation:

(5 - 3x) / 4 < 5

multiplying both sides by 4:-

5 - 3x < 20

-3x < 15

x > 15/-3

x > -5  (Note the inequality sign is flipped because we are dividing by a negative number)


8 0
3 years ago
Original: $110<br> New: $59<br> %Decrease:__________
Lemur [1.5K]

Answer:

46.36%

Step-by-step explanation:

Original: 110

New: 59

Percent Decrease: x

110 - 59 = 51

51/110 ≈ 46.3636... ≈ 46.36%

-Chetan K

3 0
2 years ago
Read 2 more answers
What is the remainder of 6728 divided by 70
yanalaym [24]
The remainder of 6728 divided by 70 is 8, This is because when 6728 is divided by 70, 70 goes into 6728, 96 times evenly. And there is only 8 left.
3 0
2 years ago
Other questions:
  • Rocco rolls two number cubes at the same time. what is the probability of rolling a 2 and 3\
    14·1 answer
  • PLEASE HELP<br><br> Determine which relation is a function.
    13·2 answers
  • Subtract 6 ounces from 3 pounds.
    9·1 answer
  • HELP, 30 POINTS !!
    10·2 answers
  • ASAP thank you.........
    15·1 answer
  • Alex spent $15 on 34 pounds of cookies. What is the unit rate in cost per pound?
    14·2 answers
  • AB = BC
    11·2 answers
  • What is the slope-intercept form of the following equation?
    11·1 answer
  • I’ll give brainliest!! please help and answer correctly! plsss answer quick
    10·2 answers
  • Match the following:
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!