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Ivenika [448]
3 years ago
11

4·p·4·p using exponets

Mathematics
2 answers:
Lisa [10]3 years ago
6 0
P to the fourth power
Llana [10]3 years ago
5 0
4 to the second power times p to the second power
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The daily revenues of a cafe near the university are approximately normally distributed. The owner recently collected a random s
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Answer:

The sample size to obtain the desired margin of error is 160.

Step-by-step explanation:

The Margin of Error is given as

MOE=z_{crit}\times\dfrac{\sigma}{\sqrt{n}}

Rearranging this equation in terms of n gives

n=\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2

Now the Margin of Error is reduced by 2 so the new M_2 is given as M/2 so the value of n_2 is calculated as

n_2=\left[z_{crit}\times \dfrac{\sigma}{M_2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{\sigma}{M/2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{2\sigma}{M}\right]^2\\n_2=2^2\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4n

As n is given as 40 so the new sample size is given as

n_2=4n\\n_2=4*40\\n_2=160

So the sample size to obtain the desired margin of error is 160.

4 0
3 years ago
Write the exponent for the expression. <br> 1/8 x 1/8
kompoz [17]

Answer:

8^{-2}

Step-by-step explanation:

2^{-2} = 1/4

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5 0
2 years ago
(3/2)2+4÷2⋅3 simplify
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Hi there!

(3/2)2+4<span>÷2*3 = 9

Hope this helps! :)</span>
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4 11/12

Step-by-step explanation:

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