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
Marrrta [24]
3 years ago
5

The manufacturer of a metal stand for home TV sets must be sure that its product will not fail under the weight of the TV. Since

some larger sets weigh nearly 350 ​pounds, the​ company's safety inspectors have set a standard of ensuring that the stand can support an average of over 575 pounds. Their inspectors regularly subject a random sample of the stands to increasing weight until they fail. They test the hypothesis Upper H 0​: muequals575 against Upper H Subscript Upper A​: mugreater than575​, using the level of significance alphaequals0.01. If the sample of stands fails to pass this safety​ test, the inspectors will not certify the product for sale to the general public. The manufacturer is thinking of revising its safety test. Complete parts a through c below.
a) is this an upper-tail or lower tall test? In the context off the problem, Why is this important
This is an upper-tail test because the company wants to show the stands will hold 525 pounds (or more) easily.
This is a lower-tail test because the weight of the TV sets must be less than the strength of the stands.
This is an upper-tail test because the TV sets will be placed on top of the stands.
This is a lower-tail test because the company tests the strength of the stands by starting with a weight below the desired strength and gradual increasing it.

b) Explain what will happen if the inspectors commit a Type l error. Choose the correct answer below.
They will decide the stands are safe when they're not.
They will decide the stands will hold 350 pounds easily when in fact the stands can hold 525 pounds easily.
They will decide the stands will hold 525 pounds easily when in fact the stands can only hold 350 pounds easily.
They will decide the stands are unsafe when they are in fact safe.

c) Explain what will happen if the inspectors commit a Type II error. Choose the correct answer below.
They will decide the stands are unsafe when they are in fact safe.
They will decide the stands will hold 350 pounds easily when in fact the stands can hold 525 pounds easily.
They will decide the stands will hold 525 pounds easily when in fact the stands can only hold 350 pounds easily.
They will decide the stands are safe when they're not.
Mathematics
1 answer:
ikadub [295]3 years ago
4 0

Answer:

a) "This is an upper-tail test because the company wants to show the stands will hold 525 pounds (or more) easily."

b) "They will decide the stands are safe when they're not."

c) "They will decide the stands are unsafe when they are in fact safe."

Step-by-step explanation:

a) As the alternative hypothesis Ha is μ>575, the rejection region lays in the upper tail. Then, it is an upper-tail test.

They are testing the claim that the stand supports an average of 575 pounds or more, and are looking for statistical evidence for that claim.

"This is an upper-tail test because the company wants to show the stands will hold 525 pounds (or more) easily."

b)  A Type I error happens when a true null hypothesis is rejected.

This would mean that a stands that doesn't really hold 575 pounds or more has passed the test. The stand would appear more safe than it is.

"They will decide the stands are safe when they're not."

c) A Type II error happens when a false null hypothesis failed to be rejected. In this case, a safe stand, that suports 575 pounds or more, does not pass the test.

"They will decide the stands are unsafe when they are in fact safe."

You might be interested in
Sara owns an exotic pet store. She wants to make sure she has more than a pound of food for every 15 lizards she has in the stor
RSB [31]

Answer:

<u><em>Which inequality can be used to solve the problem? </em></u>

A : x/15 < 4.25

<u><em>Solve the inequality. How can you interpret the solution? </em></u>

C : She can have a maximum of 63 lizards in the store.

Step-by-step explanation:

Edgen answer.

Multiplication and Division Inequalities  Assignment

Writing, Solving, and Interpreting an Inequality

6 0
2 years ago
Read 2 more answers
PLSSS HELP IMEDEATLY Find the x- and y-intercepts of the graph of 2 – 6y = 35. State your answers as
Lelechka [254]

Answer:

Y= -5.5  There is no X intercept.

Step-by-step explanation:

Please mark brainliest.

7 0
2 years ago
A triangle has an area of 15. One of its sides has length 10. What is the length of the altitude to that side?
UNO [17]

Answer:

Im to lazy to calculate the entire answer but its basically the formula is a*b/2

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
What is the value of y in the equation 4y – 2(1 – y) = –44?
Sergio039 [100]

Answer:

-7

Step-by-step explanation:

To find y, follow these steps:

4y - 2 (1 - y) = -44

First, distribute the -2 into the parenthesis:

4y - 2 + 2y = -44

The reason the 2y is positive is due to the fact that negative and negative cancel each other out and form a positive.

Now, combine like terms:

6y - 2 = -44

To get y, you need to isolate it from the constants. In order to do so, do the inverse relationship for the constant -2. To do this, add 2 to -44:

6y = -42

Now, divide six on both sides. You divide because six is currently being multiplied with y. Keep in mind that the 42 is still negative!

y = -7

Hope this helps!

4 0
3 years ago
Read 2 more answers
Given a line with slope m = -3/2 and a point (5, -6), what's the y-coordinate of the y- intercept?​
Svetlanka [38]

Answer:

3/2

Step-by-step explanation:

y = mx + b

-6 = -3/2(5/1) + b

-12/2 = -15/2 + b

b = 3/2

3 0
2 years ago
Other questions:
  • Veronica's weekly salary at Fry^ prime s is \$579.25. What is her annual salary
    12·1 answer
  • Jerimy factored 144x^2-25as follows:
    12·1 answer
  • PLEASE help Asap please
    12·1 answer
  • Pls ANSWER URGENT!!!!
    10·1 answer
  • Marcus can read about 40 pages in one hour. if he reads at the same rate for 2 hours, how many pages will marcus read?
    14·2 answers
  • Which equation represents a linear function<br>a) y=-x^2<br>b)y=x^2<br>c)y=4×<br>d)y=5x^3​
    10·1 answer
  • Which data set is the farthest from a normal distribution?
    11·2 answers
  • WHAT IS 10 x 12 - 14 DIVIDED BY 2 + 15 (USING PEMDAS , GEMDAS)
    11·2 answers
  • Find the value that completes the proportion
    5·1 answer
  • Lebron scored 25 points per game. If he ended up with 1,250 points for the season. How many games did he play?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!