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
Montano1993 [528]
3 years ago
5

State the conclusion based on the results of the test. The standard deviationstandard deviation inin the pressure required to op

en a certain valve is known to be sigma equals 1.3 psi.σ=1.3 psi. Due to changes in the manufacturing​ process, the​ quality-control manager feels that the pressurepressure variabilityvariability has changedchanged. The null hypothesis was rejected.Choose the correct answer below. A. There is not sufficient evidence that the mean of the pressure required to open a certain valve has not changed. B. There is sufficient evidence that the mean of the pressure required to open a certain valve has changed. C. The mean of the pressure has not changed. D. The mean of the pressure has changed. E. There is sufficient evidence that the mean of the pressure required to open a certain valve has not changed. F. There is not sufficient evidence that the mean of the pressure required to open a certain valve has changed.
Mathematics
1 answer:
inysia [295]3 years ago
4 0

Answer:

<u>B. There is sufficient evidence that the mean of the pressure required to open a certain valve has changed. </u>

Step-by-step explanation:

We make this conclusion based on these reasons:

  1. We are told that the "null hypothesis was rejected" after the <em>"manager feels that the pressure variability has changed.,</em> meaning the <u>null hypothesis was the opposite of what occurred; that is to say, it is the alternate hypothesis that proved true instead.</u>
  2. <em>"changes in the manufacturing​ process"</em> form what can be called "sufficient evidence" that the mean of the pressure required to open the valve has changed, thereby going against the null hypothesis.

It is based on the above reasons that the null hypothesis was rejected.

You might be interested in
What is the range of arcsinx
Aleonysh [2.5K]
Y= arcsin(x) is equivalent to sin(y) = x

we know that     -1≤x+1, hence the range of y is:    -π/2≤y≤+π/2
 
3 0
3 years ago
Can someone help me with 19 ,20,21,22
valina [46]

Answer:

In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length).

Dual polygon: Self-dual

Step-by-step explanation:

4 0
3 years ago
9. Gabriel is solving 23 x 12. He already multiplied the ones, 2 x 3 = 6. What two digits should he multiply next? How do you kn
Hitman42 [59]

Answer:

20 x 10

Step-by-step explanation:

because these ar​e the remaining digits :D

6 0
2 years ago
Plssssssssssssss help.
Pepsi [2]

Answer:

mega mind<3<3<3<3<3<3<×<×<3<3<×

5 0
2 years ago
Least common multiple of 9 45 and 81
WITCHER [35]
<span>The lowest common multiple is the smallest number that is a shared multiple of a set of numbers. 9 x 1 = 9, 9 x 5 = 45 and 9 x 9 = 81. The smallest common multiple is 9.</span>
5 0
3 years ago
Other questions:
  • Explain the tangent line problem
    6·1 answer
  • IM GIVING 20 POINTS. help me please. it would be very helpful
    14·1 answer
  • a normally distributed data set has a mean of 35 and a standard deviation of 2.5 what z-score corresponds to a data value of 32
    12·1 answer
  • The Hobbits are building a watchtower so they can prepare to battle in case trolls decide to attack them. One Hobbit will always
    12·1 answer
  • How do you know when a question is a division problem
    13·2 answers
  • Half a number is at least 2 units from 20.<br> Please need help!!!
    9·2 answers
  • Find the area and perimeter of a rectangle that is 14.5 meters by 5.8 meters.
    14·1 answer
  • What is the solution to this inequality?
    5·1 answer
  • Is it possible for the line segments of a triangle to be 6 cm, 7 cm, and 12 cm in length?
    8·2 answers
  • Alberts bank account decreased by a total of 193 over a period of 12 days. what was the average daily decrease in his account?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!