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
stiv31 [10]
3 years ago
12

A company has developed a new ink-jet cartridge for its printer that it believes has a longer life-time on average than the one

currently being produced. To investigate its length of life, 225 of the new cartridges were tested by counting the number of high-quality printed pages each was able to produce. The sample mean and standard deviation were determined to be 1511.4 pages and 35.7 pages, respectively. The historical average lifetime for cartridges produced by the current process is 1502.5 pages. Please write down the symbolic form of the hypotheses.
Mathematics
1 answer:
Mila [183]3 years ago
6 0

Answer:

The test hypothesis is :

H_0: \mu=1502.5\\ H_a: \mu>1502.5

Step-by-step explanation:

Consider the provided information.

Null hypothesis refer the population parameter is equal to the claimed value.

If there is no statistical significance in the test then it is know as the null which is denoted by H_0, otherwise it is known as alternative hypothesis which denoted by H_a.

The historical average lifetime for cartridges produced by the current process is 1502.5 pages.

Hence, the test hypothesis is :

H_0: \mu=1502.5\\ H_a: \mu>1502.5

You might be interested in
Find the diameter of a cone that has a volume of 56.52 cubic inches and a height of 6 inches. Use 3.14 for pi. a. 3 inches. b. 6
sergejj [24]
Volume of cone = (1/3)pi*r²h

56.52 = (1/3)*3.14*r²*6

56.52/(2*3.14) = r²

9 = r²

r² = 9

r = √9

r = 3

Diameter = 2*r = 2*3 = 6 inches.    b.
3 0
3 years ago
PLssssss only need help with questions 2 and 4. I Will also give brianlist
inessss [21]

Answer:

First oneB Second one A

Step-by-step explanation:

3 0
3 years ago
Generate an equivalent expression using prime factorization for -60. show your workk ​
Darina [25.2K]

Answer:

60 70 80m9

Step-by-step explanation:

4 0
3 years ago
Question 9(Multiple Choice Worth 5 points) (06.01 MC) Solve the system of equations below. x + y = 8 3x + 2y = 21 (3, 5) (5, 3)
gayaneshka [121]
<h3>Answer:  B.  (5,3)</h3>

How to get this answer:

x+y = 8 solves to y = -x+8 after isolating y. You subtract x from both sides.

Plug this into the second equation and solve for x

3x + 2y = 21

3x + 2( y ) = 21

3x + 2( -x+8 ) = 21 ... replace y with -x+8

3x - 2x + 16 = 21

x + 16 = 21

x = 21-16

x = 5

Use this to find y

y = -x+8

y = -5+8

y = 3

We have x = 5 and y = 3 pair up to get the ordered pair solution (5,3)

8 0
3 years ago
Help please in y= mx + b form
Vera_Pavlovna [14]

Answer:

y= <u>-2</u><u> </u><u>x</u> -8

4

Step-by-step explanation:

-8 is on the y axis

rise over run u rise -2 run to the side 4

5 0
3 years ago
Read 2 more answers
Other questions:
  • Your friend evaluates (10 – k) = 5 for k= 5, and gets 9 for an answer. Explain your friend's error.
    11·1 answer
  • Yes i know this is really hard but please help and can u graph it for me too by the way
    10·1 answer
  • What is the average of 45 and 19
    12·1 answer
  • Solve for y<br>8×+4y=2​
    9·2 answers
  • Find the interest earned in an account with $600 invested at 4.5% annual simple interest for 2 years.
    7·1 answer
  • 2x^2-5x-5=0PLEASE HELP BEEN WORKING ON THIS FOR HOURS PLEASE!!!!!!
    11·1 answer
  • Thank for answer my question
    13·1 answer
  • PLZ HELP PPLLLZZZZ ASAP PLZ HELP PPPPLLLLZZZZZZ PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPLLLLLLLLLLLLLLLLLLLLLLLLLLL
    9·1 answer
  • A seagull is 12 feet above the surface of the ocean. A fish is 3 feet below the surface of the water. How far apart are the seag
    15·1 answer
  • Choose the longer measurement <br>14 inches 1 foot​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!