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
BaLLatris [955]
3 years ago
15

A sheet metal manufacturer is making 10-gauge sheet metal, which is supposed to be 3.416 mm thick. One of the pieces of manufact

uring equipment was suspected of malfunctioning, so the manufacturer tested a random sample of 100 pieces of steel to make sure the average steel thickness is 3.416 mm.
Which of the following is a statement of the null hypothesis?A. The equipment is making the sheet metal too thick. The average average steel thickness is greater than 3.416 mm.B. The equipment is not working properly. The average average steel thickness is not 3.416 mm.C. The equipment is working properly. The average average steel thickness is 3.416 mm.
Mathematics
1 answer:
satela [25.4K]3 years ago
4 0

Answer:

Step-by-step explanation:

We need to evaluate if thickness of a 10 gauge metal sheet is a requiered in the process that means   3.416 mm thick. So that should be our null hypothesis;  μ₀ = 3.416    and based on sample data, we will formulate an alternative hypothesis taking into account the mean, and standard deviation obtained. We surely will have better  information to take a decision

You might be interested in
Is the graph increasing or decreasing?<br> A:increasing <br> B:decreasing <br> C:constant
Ann [662]
Looks like the graph is decreasing to me
3 0
3 years ago
Select the correct properties of slope below.
Alinara [238K]
<span>A. Lines that go up from left to right should have a positive slope.
B. Lines that go down from left to right should have a negative slope.
</span><span>D. The slope of a steep line should be bigger than the slope of a flat line.
E. The slope of a steep line should be smaller than the slope of a flat line.</span>
3 0
3 years ago
What is the distance between X(-3,4) and Y(2,1)
enyata [817]

Answer:yes the answer is B

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Divide the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending power
aev [14]
2) (9x² - 18x - 7) / (3x + 1) 
<span>3x - 7 </span>
6 0
3 years ago
Given that x is a normally distributed random variable with a mean of 50 and a standard deviation of 2, find the probability tha
Shkiper50 [21]

Let X be the normal variable with mean μ =50 and standard deviation σ =2

We have to find probability that x is between 47 and 54

P(47 < X < 54) = P(X < 54) - P(X < 47)

= P(\frac{x-mean}{standard deviation} - P(\frac{x-mean}{standard deviation}

= P(Z < 2) - P(Z < -1.5)

Using standard normal z score table to find probabilities we get

P(Z < 2) = 0.9772

P(Z < -1.5) = 0.0668

P(47 < X < 54) = P(Z < 2) - P(Z < -1.5)

= 0.9772 - 0.0668

P(47 < X < 54) = 0.9104

The probability that x is between 47 and 54 is 0.9104

5 0
2 years ago
Other questions:
  • Q # 17 please solve the figures
    5·1 answer
  • Help please anyone:)
    15·2 answers
  • 3x+2=3x+2<br> Is this one solution, no solution, or infinite solution
    12·1 answer
  • How many gallons of a 80% antifreeze solution must be mixed with 60 gallons of 30% antifreeze to get a mixture that is 70% antif
    5·1 answer
  • 12x + 4y = 152 32x + 12y = 420 what is y?
    6·1 answer
  • What is the value of n in the proportion below?
    13·2 answers
  • Marge cut 16 pieces of tape each at 3/8 inches long. How much tape did Marge<br> Cut!
    15·2 answers
  • Find the sum of the interior angles, then solve for x. <br><br> Help!!
    12·2 answers
  • Four friends shopped at the Sale Depot for movies. Robby went on Monday and bought three movies for $15.36. Paula went on Wednes
    15·1 answer
  • If mZFBC = (10x – 9), mZCBE = (4x + 15),<br> find mZFBE.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!