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2 years ago

13

For a confidence level of 88%, find the critical value for a normally distributed variable. The sample mean is normally distribu

ted if the population standard deviation is known.

1 answer:

Elanso [62]2 years ago

8 0

Answer:

z = ± 0.772193214

Step-by-step explanation:

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A tourist standing on the New York City coast sees the Statue of Liberty, which is 305 feet tall. She must tilt her head 9 degre

mixer [17]

Given:

Height of the Statue of Liberty = 305 feet

Angle of elevation = 9 degrees

To find:

The between the tourist and the Statue of Liberty.

Solution:

Using the given information, draw a figure as shown below.

In a right triangle,

$\tan \theta=\dfrac{Perpendicular}{Base}$

In the triangle ABC,

$\tan 9^\circ=\dfrac{305}{x}$

$x=\dfrac{305}{\tan 9^\circ}$

$x=1925.6942$

$x\approx 1926$

Therefore, the tourist is standing 1926 feet from the Statue of Liberty.

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antiseptic1488 [7]

Answer:

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(3n^2-5n+6) + (-8n^2-3n-2)=

Aleksandr [31]

Answer:

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Step-by-step explanation:

Remove Parentheses :

3n²-5n+6 - 8n²-3n-2

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Simplify:

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