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
lina2011 [118]
3 years ago
13

Add me on insta clo.Jackson

Mathematics
1 answer:
anyanavicka [17]3 years ago
3 0

Answer:

be careful,

brainly will ban your account

please use brainly if you want to ask a question that you need help on or you can help people

Step-by-step explanation:

You might be interested in
Assume that population mean is to be estimated from the sample described. Use the sample results to approximate the margin of er
Vikentia [17]

Answer:

ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1

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".

\bar X =69 represent the sample mean for the sample  

\mu population mean

s=4.0 represent the sample standard deviation

n=64 represent the sample size  

Assuming the X follows a normal distribution

X \sim N(\mu, \sigma)

The sample mean \bar X have the following distribution:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

The margin of error for the sample mean is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}

Since we have the sample standard deviation we can estimate the margin of error like this:

ME=t_{\alpha/2}\frac{s}{\sqrt{n}}

The next step would be find the value of \z_{\alpha/2}, \alpha=1-0.95=0.05 and \alpha/2=0.025

We can find the degrees of freedom like this:

df=n-1=64-1=63

And we can find the critical value with the following code in excel for example: "=T.INV(0.025,63)" and we got:

t_{\alpha/2}=\pm 1.998

And the margin of error would be :

ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1

3 0
3 years ago
Write a division equation with a answer of 42,What is one I could write???
mrs_skeptik [129]
You could say 84/2, 126/3, or even 168/4
4 0
3 years ago
Find the quotient. Do not round. 55.328 ÷ 3.8
enot [183]
Hello

the answer is 14.56

Have a nice day


<span>
</span>
7 0
2 years ago
Read 2 more answers
If the perimeter of a rectangle is 124cm &amp; the width is 35cm, what is the length?
-BARSIC- [3]

Answer:

l=27

b=2×35=70

2l=124-70=54

l=54/2=27

6 0
2 years ago
How to multiply and divide rational numbers?
lutik1710 [3]

To divide rational numbers, you turn the division problem into a multiplication problem by flipping the second rational number. Then you go ahead and multiply the tops and bottoms together to get your answer. If you can simplify your problem before multiplication, you can go ahead and do so to make your problem easier.

5 0
2 years ago
Read 2 more answers
Other questions:
  • The teacher bought new crayons for her class. She bought 7 packs of 9 crayons. She already has 17 crayons in her classroom. She
    5·1 answer
  • determine the quadratic function f whose graph is given. the vertex is (2,-7) and the y-intercept is -3
    10·1 answer
  • How do you write 2.305 as a fraction in simplest form
    9·1 answer
  • Can you solve -2 (2x - 6) = -3x
    7·2 answers
  • Can sum1 help me asap plssss
    8·2 answers
  • Hiii please help! i’ll give brainliest if you give a correct answer tysm!
    5·1 answer
  • Round 1.6 to the nearest whole number
    12·2 answers
  • The button on Madelyn's jacket has a radius of 4 millimeters. What is the button's circumference?
    5·1 answer
  • Estimate the cost of painting a concrete patio if it is a 12 foot by 12 foot rectangle, and a quart of paint that covers 47 squa
    8·1 answer
  • Solve for x in the following equation.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!