3 years ago

A carousel has 56 horses 3/8 of them are white how many horses are not white

Mathematics

1 answer:

olga_2 [115]3 years ago

4 0

5/8 of them are not white, so 5/8 times 56, you get 35.

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Step-by-step explanation:

Formula to find the sample size :

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

Given : Confidence level : $(1-\alpha)=0.90$

⇒ significance level = $\alpha= 0.10$

z-value for 90% confidence interval (using z-table)= $z_{\alpha/2}=1.645$

Prior estimate of the population proportion (p) of customers who keep up with regular vehicle maintenance is unknown.

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Margin of error : E= 2%=0.02

Now, the required sample size will be :

$n=0.5(1-0.5)(\dfrac{1.645}{0.02})^2$

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3 years ago

*25 points*

frosja888 [35]

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¿Tiene una pregunta específica o como ejemplo de pregunta con números?

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