3 years ago

UNUL ESCREView

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4 0

The line containing points A and B lies entirely in plane T.
Line z intersects plane S at point C.
Planes R and T intersect at line y

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Suppose an automotive repair company wants to determine the current percentage of customers who keep up with regular vehicle mai

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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4 years ago

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alright so I got the answer from here but I still can't figure out how we got 12p? can somebody explain step by step pls

Andreas93 [3]

There's no 12p in the simplification

$(2p+3)^{2} =(2p)^{2} +3^{2} = 4p^{2} +9$

3 0

3 years ago

Which equation represents the proportional relationship in the table

seraphim [82]

It is c=3r because 2*3 is 6 and 4*3 is 12 and it is always times 3.

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3 years ago

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What is something that Robin Hood says that shows he is overly confident?

Ivanshal [37]

The phrase Robin Hood says that shows he is overly confident is:

"That'll be pretty hard to do with an arrow through your heart."

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4 years ago

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Estando próximo a celebrar el aniversario de nuestra IE "SAP" el profesor de arte organiza concurso de dibujo , para tal evento

USPshnik [31]

Answer:

I hope this helps you

Step-by-step explanation:

The answer is 4

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3 years ago