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
azamat
2 years ago
8

Data from a sample of 576 people in a city was used to estimate the mean monthly bill

Mathematics
1 answer:
stiv31 [10]2 years ago
3 0

Using the z-distribution, it is found that the margin of error for a 95% confidence interval is of $0.04.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm z\frac{\sigma}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • z is the critical value.
  • n is the sample size.
  • \sigma is the standard deviation for the sample.

The margin of error is given by:

M = z\frac{\sigma}{\sqrt{n}}

In this problem, the values of the parameters are:

z = 1.96, \sigma = 0.48, n = 576.

Hence, the <em>margin of error</em>, in dollars, is given by:

M = z\frac{\sigma}{\sqrt{n}}

M = 1.96\frac{0.48}{\sqrt{576}}

M = 0.04.

More can be learned about the z-distribution at brainly.com/question/25890103

You might be interested in
How to write (0,8] as an inequality
larisa86 [58]
Answer: 0 \ \textless \  x \le 8

What is given to you is interval notation. We have the interval start at 0 and end at 8. The value 0 is not included in the interval as indicated by the parenthesis. So we go with a "less than" sign (instead of a "less than or equal to" sign)

The value 8 is included since a square bracket is used here. The use of "or equal to" is needed to make sure the endpoint 8 is included.

So x can be any number between 0 and 8. It can't be 0 but it can be 8. 
3 0
3 years ago
Qual será o tempo de queda se uma pedra cair de uma altura de 19,9<br> metros?
tensa zangetsu [6.8K]
<span><span><span><span>g<span>t2</span></span>2</span>=2g</span><span><span><span>g<span>t2</span></span>2</span>=2g</span></span><span> or 19.9m.</span>
4 0
3 years ago
Jones covered a distance of 50 miles on his first trip. On a later trip he traveled 300 miles while going three times as fast. H
Sergeeva-Olga [200]

Answer:

The answer is b. But you asked for the thought process so...

Step-by-step explanation:

Let speed of the 1st trip x miles / hr. and speed of the 2nd trip 3x / hr.

We know that

Speed = Distance/Time.

Or, Time = Distance/Speed.

So, the time taken to cover a distance of 50 miles on his first trip = 50/x hr.

And the time taken to cover a distance of 300 miles on his later trip = 300/3x hr.

= 100/x hr.

So we can clearly see that his new time compared with the old time was: twice as much.

Have a great day :)

4 0
3 years ago
What is the domain of the function y =<br> x +4?
Sever21 [200]

all real numbers is the domain of the function y=x+4

8 0
3 years ago
The diameter of circle x is 15 centimeters.
rjkz [21]

Answer:

15.7 cm

Step-by-step explanation:

Circle x's circumference is 15 * pi = 47.1 cm

Circle y's is 20 * pi = 62.8

The difference is 62.8 - 47.1 = 15.7

5 0
2 years ago
Other questions:
  • How do I answer this?
    7·1 answer
  • BRAINLIEST PLZ HELP A scatter plot with a line is shown below. Graph shows numbers from 0 to 10 at increments of 1 on the x axis
    14·2 answers
  • If m= (-3) and passes through (1,-5), the equation of the line is y= ?
    11·1 answer
  • Use the FOIL method to find the product below.
    8·1 answer
  • Find the center and radius of the circle with the equation. Please show work!
    6·1 answer
  • HELP PLEASE ASAP…..,……
    11·1 answer
  • I need help I am confused
    9·2 answers
  • Please solve for me it's urgent. A rectangle has 10 and 6cm each. find the area of a square with the same perimeter as that of t
    9·1 answer
  • How to find the surface area of a cube
    10·2 answers
  • Which expression is equivalent to 21\root(3)(15)-9\root(3)(15)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!