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
andriy [413]
3 years ago
15

The tuft bind strength of a synthetic material used to make carpets is known to have a mean of 100 lb and standard deviation of

20 lb. A sample of 40 is randomly selected and the average strength was found as 105lb. Let μ denote the average tuft strength. Could it be that the average tuft strength is above 100 lb? Based on the information, what should be the appropriate null and alternative hypotheses for the purpose of your analysis?
Mathematics
1 answer:
emmasim [6.3K]3 years ago
3 0

Answer:

The null hypothesis is: H_{0}: \mu = 100

The alternative hypothesis is: H_{a}: \mu > 100

Step-by-step explanation:

At the null hypothesis, we test if the mean is equal to a certain value.

At the alternate hypothesis, we test if the mean is less than, more than, or different from the value tested at the null hypothesis.

The tuft bind strength of a synthetic material used to make carpets is known to have a mean of 100 lb and standard deviation of 20 lb.

This means that the null hypothesis is: H_{0}: \mu = 100

Could it be that the average tuft strength is above 100 lb?

The world above means that the appropriate alternative hypothesis is: H_{a}: \mu > 100

You might be interested in
Parallelogram or not ?
Zielflug [23.3K]

Answer:

I think so

Step-by-step explanation:

here's here's the definition of a parallelogram

"a four-sided plane rectilinear figure with opposite sides parallel."

3 0
3 years ago
What is the formula for slope intercept form?
melisa1 [442]

Answer:

y^2-y^1 over x^2-x^1 is slope intercept form

4 0
4 years ago
Please help ASAP :ppppp
Morgarella [4.7K]

Answer:

I think it's c

Step-by-step explanation:

6 0
3 years ago
The volume of a rectangular prism is 3,240 ft3. The prism is 9ft long and 12ft wide. How tall is the rectangular prism? Please h
Softa [21]
3.5*10^5
''''''''''''''''
5 0
3 years ago
One concern of a gambler is that she will go broke before achieving her first win. Suppose that she plays a game in which the pr
Ray Of Light [21]

Answer:

The probability that she wins exactly once before she loses her initial capital is 0.243.

Step-by-step explanation:

The gambler commences with $30, i.e. she played 3 games.

Let <em>X</em> = number of games won by the gambler.

The probability of winning a game is, <em>p</em> = 0.10.

The random variable <em>X</em> follows a Binomial distribution, with probability mass function:

P(X=x)={n\choose x}p^{x}(1-p)^{n-x};\ x=0, 1, 2,...

Compute the probability of exactly one winning as follows:

P(X=1)={3\choose 1}(0.10)^{1}(1-0.10)^{3-1}\\=3\times0.10\times0.81\\=0.243

Thus, the probability that she wins exactly once before she loses her initial capital is 0.243.

4 0
4 years ago
Other questions:
  • Please help!!!!!!!!!!!!
    14·1 answer
  • What are the answer to these questions?
    12·1 answer
  • What set of numbers are all factors of 18
    15·1 answer
  • The length of a rectangle is 5ft longer than twice the width. if the perimeter is 70 ft. find the length and width of the rectan
    8·1 answer
  • What linear function can be represented by the set of ordered pairs?
    14·2 answers
  • Help me pleeeassee!!!!
    5·1 answer
  • David had $30 to spend on three gifts.He spent 10 ¼ dollars on gifts A and 5 ⅘ dollars on gifts B.How much money did he have lef
    15·1 answer
  • Pierre Martina is comparing the cost of credit to the cash price of an item. If Pierre makes a down payment of $70 and pays $34
    6·1 answer
  • THANKS! Everyone if you answer this
    12·1 answer
  • Whats 69x420?????????
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!