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
Sphinxa [80]
3 years ago
12

Round 2,748,091 to the nearest 100,000

Mathematics
1 answer:
elixir [45]3 years ago
7 0

Answer:

I think it will be 2,700000

You might be interested in
You wish to compute the 99% confidence interval for the population proportion. How large a sample should you draw to ensure that
Nataly_w [17]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.13}{2.58})^2}=98.47  

And rounded up we have that n=99

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by \alpha=1-0.99=0.01 and \alpha/2 =0.005. And the critical value would be given by:

z_{\alpha/2}=-2.58, t_{1-\alpha/2}=2.58

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.13 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We assume the value for \hat p =0.5 since we don't have previous info. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.13}{2.58})^2}=98.47  

And rounded up we have that n=99

4 0
3 years ago
Read 2 more answers
Write as an equation: Alice, Barbara, and Carol are sisters. Alice is 3 years younger than Barbara, and Barbara is 5 years young
Dmitrij [34]

a+b+c=68

b-3=a

c-5=b

now just solve the system of equations, substitue so that there are only b's in the equation:

a+b+c=68

(b-3) + b + (b+5) = 68

3b=66

b=22

Therefore Barbara is 22

4 0
3 years ago
Y-2-√x-6<br> what is the domain of this function?
Ugo [173]
I hope it helps, let me know if it’s right

3 0
2 years ago
What is the length x of PQ
Bas_tet [7]

Answer:

11.2

Step-by-step explanation:

If the rectangulars are similar then we can use similarity ratio to calculate value of x

CD is similar to RS and AB is similar to QP

4/6.4 = 7/x cross multiply expressions

4x = 44.8 divide both sides by 4

x = 11.2

6 0
3 years ago
HELP HELP HELP!! ILL MARK BRAINLIEST
s344n2d4d5 [400]

Answer: i think its the 3rd one

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • To the nearest tent what is the area of circle whose diameter is 21 inches
    13·1 answer
  • I WILL GIVE BRAINLIEST TO WHOEVER IS CORRECT
    7·1 answer
  • Which of the following equations have the correct solution? Select all that apply.
    12·2 answers
  • If f (x) = StartRoot x minus 3 EndRoot, which inequality can be used to find the domain of f(x)?
    8·2 answers
  • A + 1 = <br> please help now please
    10·1 answer
  • Michèle is buying carpet for a room with the dimensions shown
    7·2 answers
  • # 6
    10·1 answer
  • PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! *EXTRA POINTS* DONT SKIP:((
    13·1 answer
  • Samantha has $600 to spend at a bicycle store for some new gear and biking outfits.
    8·1 answer
  • The diameter of a sphere measures 10.4 inches. what is the surface area of the sphere?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!