3 years ago

. How many ways are there for an 8-person club to elect a president and a vice-president? (The

Mathematics

2 answers:

romanna [79]3 years ago

4 0

Answer:

28 ways

Step-by-step explanation:

Gemiola [76]3 years ago

3 0

Answer:

Step-by-step explanation:

Trust me I have big brain

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What is 147.3 as a mixed number and what is 147.3 as a improper fraction

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147.3 as a mixed nunber is 147 and 3/10, 147.3 as an improper fraction is 1473/10

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3 years ago

3 • X = 5.25.<br> What is X?

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Your answer will be x=1.75

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3 years ago

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A tire travels about 75 inches in one full rotation. What is the Demeter of the tire, to the nearest inch?

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<h2><u>24 inches</u></h2><h2><u></u></h2>

Step-by-step explanation:

c = πd

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Divide both sides by 3.14

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3 years ago

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The number of violent crimes committed in a day possesses a distribution with a mean of 2.2 crimes per day and a standard deviat

VARVARA [1.3K]

Answer:

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

And replacing we got:

$\mu_{\bar X}= 2.2$

$\sigma_{\bar X}= \frac{6}{\sqrt{100}}= 0.6$

Step-by-step explanation:

For this case we have the following info given:

$\mu = 2.2$ represent the mean

$\sigma = 6$ represent the deviation

We select a sample size of n=100. This sample is >30 so then we can use the central limit theorem. And we want to find the distribution for the sample mean and we know that the distribution is given by:

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

And replacing we got:

$\mu_{\bar X}= 2.2$

$\sigma_{\bar X}= \frac{6}{\sqrt{100}}= 0.6$

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4 years ago