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SIZIF [17.4K]
3 years ago
14

Use the data in the table to write a multiplication or a division story for each number fact.Solve.

Mathematics
1 answer:
jolli1 [7]3 years ago
4 0
10÷5=2 that is a division
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A local weather station collected the 12 p.m. temperature at 5 different locations in its town: Temperatures, °F: {63, 59, 60, 6
AveGali [126]
Ok so add all of them together and you get 305 then divide it by how many numbers there are for the mean and you get 61 then add all of the diffrences from each number to the mean and we get 6 then 61 divided by 6 gets us 10.1 but round it to 10. hope this helped.

7 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
It takes John 54 minutes to paint a fence with a length of 12 meters. On average, how long did he take to paint 1 meter of the f
seraphim [82]

Answer:

4.5

Step-by-step explanation:

I think it will work if you Divide 54 over 12 = 4.5

5 0
2 years ago
Find the perimeter of A,B,C. Round nearest 10th
MariettaO [177]

Answer:

5,9,2

Step-by-step explanation:

8 0
2 years ago
What is the length of the missing leg?​
kari74 [83]

Answer:

6

Step-by-step explanation:

\sqrt{10^{2} -8^{2} } = 6

6 0
3 years ago
Read 2 more answers
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