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3 years ago

5

What sample size would you need in order to have a 94% confidence interval that is 8% wide? Do this calculation twice: once with

the previous sample proportion, then again using the "safe" sample proportion. Comment on how these two answers compare tp each other.

1 answer:

balu736 [363]3 years ago

3 0

U would need 25% to equal wide

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The volume of the can is____?<br> There are ____cups of juice in a can

GalinKa [24]

Answer:

Step-by-step explanation:

radius = diameter / 2 = 5/2 = 2.5 in

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2 years ago

A person gets on a Ferris wheel at the starting point. The starting point is 15 feet off the ground. The Ferris wheel has a radi

lisov135 [29]

<h2>Answer:</h2>

$\boxed{\frac{25}{2}(\sqrt{6}+\sqrt{2})+65}$

<h2>Explanation:</h2>

<em>The height of the rider from the ground after the Ferris wheel</em> equals <em>the starting point is 15 feet off the ground </em><em>plus </em><em>the radius of the Ferris wheel </em><em>plus </em><em>the opposite side of the triangle ΔABC </em>(See figure below).<em> </em>Hence our goal is to find this side. We have the angle $11\pi /2=165^{\circ}$ , therefore the angle ∠BAC = 165° - 90° = 75°. So this side can be found using trigonometry:

$\overline{BC}=\overline{AB}sin(75^{\circ})=50sin(75^{\circ})=\frac{25}{2}(\sqrt{6}+\sqrt{2})$

Finally, the height is:

$H=\frac{25}{2}(\sqrt{6}+\sqrt{2})+15+50 \\ \\ \boxed{H=\frac{25}{2}(\sqrt{6}+\sqrt{2})+65}$

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2 years ago

Is the picture clear...i reallly need answers

Aleonysh [2.5K]

I do not see a picture sadly.

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