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
olchik [2.2K]
3 years ago
13

A report on the U.S. economy indicates that​ 28% of Americans have experienced difficulty in making mortgage payments. A news or

ganization randomly sampled 400 Americans from 10 cities judged to be especially economically depressed and found that 136 reported such difficulty. Does this indicate that the problem is more severe among these​ cities? What are the correct null and alternative hypotheses for testing such a​ claim?
Mathematics
1 answer:
likoan [24]3 years ago
5 0

Answer:

For this case we want to test that the true proportion of americans have experienced difficulty in making mortgage payments is higher than 0.28 (alternative hypothesis) and the sytem of hypotheis are:

NUll hypothesis: p \leq 0.28

Alternative hypotheis: p >0.28

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".  

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".  

Solution to the problem

For this case we want to test that the true proportion of americans have experienced difficulty in making mortgage payments is higher than 0.28 (alternative hypothesis) and the sytem of hypotheis are:

NUll hypothesis: p \leq 0.28

Alternative hypotheis: p >0.28

You might be interested in
2х + Зу = 5<br> у= 5 - x <br> also need method
pav-90 [236]

Answer:

x=10, y=-5

Step-by-step explanation:

2x+3y=5, y= 5-x; change y to 5-x:

2x+3(5-x)=5

2x-3x+15=5

-x=5-15

-x=-10

x=10

=>y=5-x=5-10=-5

4 0
3 years ago
A person has 22 coins, all nickels and dimes, worth one dollar and 50 cents. How many nickels are there?
kirill [66]

I think your answer is 8 or option A

7 0
3 years ago
Taylor dropped a rubber ball from a height of 8 feet.The ball hit the ground after 1 second,bounced up to 5 feet in the next sec
Rzqust [24]

Answer:

The graph is constant in the interval [4,6]

Step-by-step explanation:

We are given that,

Taylor dropped a rubber ball from a height of 8 feet.

So, at time t= 0 sec, the ball is being thrown.

Now, the next events follows as below:

1. After a second, the ball hits the ground.

2. It bounces up to 5 feet in the next second.

3. The ball again hits the ground in the next second.

4. Now, the ball again jumps up to height 2.5 feet, when Taylor holds the ball for 2 seconds more.

So, we get the figure given below, we see that,

The graph is constant in the interval [4,6].

3 0
3 years ago
Question 6(Multiple Choice Worth 3 points)
Marianna [84]
<h3>Answer:</h3>

A net is shown with 3 rectangles attached side by side all with width 2 centimeters. The length of the first and third rectangle is 9 centimeters and the middle is 7 centimeters. Attached to the middle rectangle below are 3 rectangles with a length of 7 centimeters. The width of these rectangles are 9 centimeters, 2 centimeters, and 9 centimeters.

<h3>Step-by-step explanation:</h3>

The area of a rectangular prism is the area of 6 surfaces. That is, 3 pairs of surfaces. Each of the three pairs will have one of the sets of dimensions ...

  • length × width
  • length × height
  • width × height

In order for a net to be a net useful for calculating the prism surface area, it must have 3 pairs of rectangles with these dimensions. The description above matches that requirement.

___

Please note that no two surfaces with the same pair of dimensions are adjacent.

4 0
3 years ago
Read 2 more answers
A moving van travels 560 miles to reach a new house. The drivers stop to rest after traveling 75% of the total distance. How man
dexar [7]

Answer:

the driver stopped when they had traveled 420 miles

Step-by-step explanation:

hope this helps,

5 0
2 years ago
Other questions:
  • Sixty-five campers arrive. Nine go home early. If 8 people sleep in 1 tent, how many tents will the campers need?
    6·1 answer
  • What is the quotient when x^3-5x^2+2x+5 is divided by x-2?
    13·1 answer
  • Find 2× - 2y + 5z - 2x - y + 3z
    5·1 answer
  • The sum of two numbers is 153. if four times the smaller number is subtracted from the larger​ number, the result is 18. find th
    12·1 answer
  • 9<br> Which is the simplified form of the expression<br> (64)-<br> ?<br> 66
    15·1 answer
  • What is the mean score what is the median of the score brookewood medical center
    12·1 answer
  • What does the blank equal??
    13·2 answers
  • How much degrees turn is from 1 o'clock to 2oclock​
    7·1 answer
  • Points X and Y are in plane Z. Any point collinear with X and Y is also in plane Z
    7·2 answers
  • I need a little bit of assistance with question 2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!