3 years ago

HELP WITH 20 PLEASE!

1 answer:

7 0

Divide the circumference by 2, then square that number
What you are doing is dividing the diameter by 2, getting the radius then squaring which is the formula pi r^2

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Nina [5.8K]

Answer: 1692

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.

Let we take p= 0.5

Margin of error : E= 2%=0.02

Now, the required sample size will be :

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

Simplify , we get

$n=(0.25)(6765.0625)=1691.265625\approx1692$

Hence, the required sample size = 1692

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3 years ago

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Anna007 [38]

Answer:

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Step-by-step explanation:

Un gramo equivale a $38,25, por lo que si tenemos 750 de esos gramos, tendríamos que multiplicarlos para obtener el costo total.

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2 years ago

Using the picture below, which angle is alternate exterior to angle 2?

zysi [14]

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2 years ago

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A because it’s the right answer

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