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
A square pyramid has sides of 4.1 cm, and a pyramid height of .6 cm, determine the volume.
Rainbow [258]
The formula is: a^2 h/3
the answer is about 0.49
6 0
3 years ago
The boiling point of jet fuel is 329 degrees Fahrenheit. Rounded to the nearest degree, what is the temperature in degrees Celsi
djverab [1.8K]

Put the number in the formula and do the arithmetic.

C = (5/9)(329 - 32)

C = (5/9)(297)

C = 165

The temperature in °C is 165.

7 0
3 years ago
Help me out:)i need an answer as soon as possible!!!
kifflom [539]
Answer is c , got it right
5 0
3 years ago
Classify the following polynomial by degree and number of terms: 3x+12
Licemer1 [7]
2 terms and power of 1
Linear binomial
7 0
3 years ago
Dan says 3/5 is the same as 3.5 is he correct
lys-0071 [83]
No, 3/5 is equal to 0.6
6 0
3 years ago
Other questions:
  • How do you solve this whole thing please?
    9·1 answer
  • The fastest that a seahorse can travel is 2,640 feet per hour. What is its top speed in miles per hour? plz i need help
    15·2 answers
  • Fifty randomly selected individuals were timed completing a tax form. the sample mean was 23.6 minutes; the sample standard devi
    11·1 answer
  • How to calulate what percentage a number is of a larger number
    7·1 answer
  • I need to find The value of x
    9·1 answer
  • Tony checked out 4 books from the library. He returned the books 3 days late. The fine for late books is $0.05 a day for each bo
    10·2 answers
  • Math, science and other stuff to keep my brain in check
    14·2 answers
  • Write a real word problem that can be modeled by 4 x (-7)
    13·1 answer
  • Find each difference. <br><br> (−5)−6=<br> 35−(−8)=<br> 5/2- 5/3 =<br> −4 8/3−(−1 4/1 )=
    9·1 answer
  • Please solve for brainlist
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!