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3 years ago

I NEED HELP FAST PLEASE :)

Mathematics

1 answer:

user100 [1]3 years ago

4 0

Answer:945

Step-by-step explanation:

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if Noah flips the quarter and the dime 100 times how many times should he expect the quarter to land on heads and the dime to la

Sav [38]

50 each hope this helped

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3 years ago

Perform the indicated operation. (2x + y)^2

Alina [70]

Answer: 2x^2 + y^2

Hope this helps :)

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3 years ago

Suppose a simple random sample of size n is drawn from a large population with mean mu and standard deviation sigma. The samplin

Sidana [21]

Answer:

$X \sim N(\mu,\sigma)$

Where $\mu$ the mean and $\sigma$ the deviation

Since the distribution for X is normal then we can conclude that the distribution for the sample mean $\bar X$ is given by:

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

$\mu_{\bar X} = \mu$

$\sigma_{\bar X}= \frac{\sigma}{\sqrt{n}}$

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".

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

$X \sim N(\mu,\sigma)$

Where $\mu$ the mean and $\sigma$ the deviation

Since the distribution for X is normal then we can conclude that the distribution for the sample mean $\bar X$ is given by:

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

$\mu_{\bar X} = \mu$

$\sigma_{\bar X}= \frac{\sigma}{\sqrt{n}}$

6 0

3 years ago

Read 2 more answers

Which product is greater than 3/4

Hoochie [10]

Answer:

the answer is b

Step-by-step explanation:

is b because if you you multiply 5/6 x 3/4 it will equal 30/24 if you reduce it it will be 5/4 which is bigger then 3/4

7 0

3 years ago

Which of the following groups listed below are subsets of the real numbers? Natural Numbers Rational Numbers Integers Whole Numb

Deffense [45]

The answer is Whole Numbers.

3 0

3 years ago