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
inessss [21]
3 years ago
12

The manager of the quality department for a tire manufacturing company wants to know the average tensile strength of rubber used

in making a certain brand of radial tire. She knows the population standard deviation and uses a Z test to test the null hypothesis that the mean tensile strength is 800 pounds per square inch. The calculated Z test statistic is a positive value that leads to a p-value of .047 for the test. If the significance level is .05, the null hypothesis would be rejected. Assume that the population of pressure values is normally distributed.
a) true
b) false
Mathematics
1 answer:
viktelen [127]3 years ago
8 0

Answer:

a) true

Step-by-step explanation:

Decision Rule

If;

P-value > significance level --- accept Null hypothesis

P-value < significance level --- reject Null hypothesis

Z score > Z(at 95% confidence interval) ---- reject Null hypothesis

Z score < Z(at 95% confidence interval) ------ accept Null hypothesis

For the case above, the p-value for the test is 0.047 which is less than the significance level 0.05

P-value < 0.05

Using the decision rule, we will reject the Null hypothesis which is the same as stated in the question, which means its true.

_Confirmed._

You might be interested in
(-4)(5)+(-3)(-2) whats is it???
Vlada [557]

Answer:

-14

Step-by-step explanation:

(-4)(5)+(-3)(-2)

=-20+6

=-14

5 0
3 years ago
Read 2 more answers
How do you find the surface area of a cube
lianna [129]
Find the surface area of one side and multiply it by 6
6 0
3 years ago
PLZ I NEED ANSWERS. THIS IS MIDDLE SCHOOL LEVEL NOT COLLEGE
Sedbober [7]
You did not put a question
8 0
3 years ago
Read 2 more answers
Jeffrey has a dog that weighs 3 times as much as Sarah's dog. The total weight of both dogs is 64 lb. How much does Jeffrey's Do
Fiesta28 [93]
64×3=192 you can do 64+64+64 and you get 192
8 0
3 years ago
Solve the system of equations algebraically by using substitution method:
vredina [299]

Answer:

This system has infinite solutions and it would be much easier to solve it by elimination but substitution it is.

Step-by-step explanation:

-3x+3y=9

-x+y=3

Isolate either x or y in any of the equations. I'll go with the second.

y = 3+x

Now substitute this for y in the first equation.

-3x+3(3+x)=9

Distribute the 3

-3x+9+3x=9

Combine like terms:

9=9

0=0

It's infinite

3 0
3 years ago
Other questions:
  • Monica sells lemonade over the summer and uses conical paper cups to serve
    10·1 answer
  • You have a pool that measures 15 yards by 20 yards. You want to build a deck around all four sides of the pool, and you want to
    15·1 answer
  • Find the inverse of the given function. f(x)= -1/2SQR x+3, x greater than or equal to -3
    15·2 answers
  • Ronald Fast Food randomly selected %20, percent of locations and asked the manager about the most popular meat. Of the locations
    15·1 answer
  • How should the tickets provider charge in order to maximize profit
    8·1 answer
  • Consider the diagram showing the path Joel biked. Joel biked 9 miles east and then 12 miles north. If he biked back to his start
    8·2 answers
  • Which Sentence about measuring angles is true?
    14·2 answers
  • Express the ratio as a fraction in simplest form 18 oz to 3 cups
    12·2 answers
  • Cos x= 3/4, s in quadrant 1
    13·1 answer
  • What are the coordinates for b c d and e ??
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!