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
Zigmanuir [339]
3 years ago
6

Phoebe took a survey of her classmates' favorite sport. The results are in the table below:

Mathematics
1 answer:
olga55 [171]3 years ago
7 0

Answer:

.14

Step-by-step explanation:

You might be interested in
Solve for the unknown<br> 7(42x)=28(4x)
aalyn [17]
Try to use Mathway if your having trouble solving your equations

4 0
3 years ago
Read 2 more answers
4(c-3)=8<br> what does c equals?<br> correct answers ONLY please
rodikova [14]
Is there like a picture or something?
5 0
3 years ago
Read 2 more answers
​ ∠3 ​ and​ ​ ∠4 ​ ​are complementary adjacent angles. m∠4=49° What is the measure of ​​ ∠3 ​?
neonofarm [45]
41°. 90-49=41 mmkmmmm
6 0
3 years ago
Read 2 more answers
What is 18 divided by negative 3
sweet-ann [11.9K]
18 / -3 = -6

answer

<span>negative 6 is 18 divided by negative 3
</span>
hope it helps
6 0
3 years ago
Read 2 more answers
A small town has 2000 families. The average number of children per family is mu = 2.5, with a standard deviation sigma = 1.7. A
Nikitich [7]

Answer:

Let X the random variable that represent the number of children per fammili of a population, and for this case we know the following info:

Where \mu=2.5 and \sigma=1.7

We select a sample of n =64 >30 and we can apply the central limit theorem. From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

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

And for this case the standard error would be:

\sigma_{\bar X} = \frac{1.7}{\sqrt{64}}= 0.2125

Step-by-step explanation:

Previous concepts

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".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

Solution to the problem

Let X the random variable that represent the number of children per fammili of a population, and for this case we know the following info:

Where \mu=2.5 and \sigma=1.7

We select a sample of n =64 >30 and we can apply the central limit theorem. From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

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

And for this case the standard error would be:

\sigma_{\bar X} = \frac{1.7}{\sqrt{64}}= 0.2125

6 0
3 years ago
Other questions:
  • Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre
    14·1 answer
  • Find the interquartile range of the data. <br><br> A.5<br><br> B.8<br><br> C.13<br><br> D.17
    15·2 answers
  • Player 1 and player 2 are running laps around a field. Player 1 runs 1 lap every 6 minutes, while player 2 runs 1 lap every 10 m
    14·1 answer
  • I need help with this.
    9·1 answer
  • Can you help me plot my points on my 4 quadrant graph
    13·1 answer
  • The numbers X, Y, and Z are such that y= KX and Z equals K^2x FK equals 1.5, select a possible values for the set of numbers {x,
    8·1 answer
  • 1. 60 is increased to 67.
    5·1 answer
  • Which algebraic expression represents “the class was divided into four equal groups”?
    10·2 answers
  • Select the correct answer.
    8·1 answer
  • Juan graphed a line with a slope of −23 .
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!