3 years ago

Which one of the following statements expresses a true proportion?

1 answer:

UNO [17]3 years ago

4 0

A. 3 : 5 = 12 : 20
because you are multiplying the 3 and 5 by 4 to get the 12 and the 20.

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Dominik [7]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

$95\%$ Confidence Interval for both the percentage of all x-ray machines

p = the machinery's share is not working:

$= \frac{228}{275}\\\\ = 0.829$

$\text{Margin of Error} = Z_{(\frac{\alpha}{2})} \times \sqrt{( p \times (1-p)}{n})$

$= 1.96 \times \sqrt{(0.829 \times \frac{0.171}{275})} \\\\= 1.96 \times 0.023 \\\\= 0.045$

Lower $95\%$ Confidence interval = p - error margin $= 0.829 - 0.045 = 0.784$

Upper $95\%$ Confidence Interval = p + error margin $= 0.829 + 0.045 = 0.874$

So, $95\%$ Confidence Interval $= ( 0.78 , 0.87 )$

4 0

3 years ago

deff fn [24]

What are the answer choices?

5 0

3 years ago

Lera25 [3.4K]

450

I used my head lol

7 0

3 years ago

sattari [20]

B. Because you can easily just eat at home and avoid paying to eat

7 0

4 years ago

Free_Kalibri [48]

Answer: Option 2.

Step-by-step explanation:

a fraction is a way of showing division. b divided by 8 can also be shown as

6 0

3 years ago