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3 years ago

Rewrite 1/2 * 1/2 * 1/2 * 1/2 as an exponential expression with a base of 2.

Mathematics

2 answers:

Leokris [45]3 years ago

7 0

Answer:

2^-4

Step-by-step explanation:

Elena L [17]3 years ago

7 0

Answer:

Step-by-step explanation:

1/2 * 1/2 * 1/2 * 1/2 = $(\frac{1}{2})^{4}$

$\frac{1}{a^{m}}= a^{-m}$

$(\frac{1}{2})^{4} = 2^{-4}$

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For a 95% confidence interval what would the sample size need to be as it's most conservative to have a 2% margin of error

aleksley [76]

Answer:

The size of the sample 'n' = 2401

Step-by-step explanation:

Step:1

Given that the margin of error = 2 % = 0.02

The margin of error is determined by

$M.E = \frac{Z_{0.05} \sqrt{p(1-p)} }{\sqrt{n} }$

we know that the proportion

$\sqrt{p(1-p)} < \frac{1}{2}$

Step:2

The margin of error is determined by

$0.02 = \frac{1.96( \frac{1}{2} ) }{\sqrt{n} }$

$\sqrt{n} = \frac{1.96}{2 X 0.02}$

√n = 49

Squaring on both sides, we get

n = 49 × 49

n = 2401

Final answer:-

The size of the sample 'n' = 2401

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Since opening night, attendance at play A has increased steadily, while attendance at play B first rose and then fell. Equations

lina2011 [118]

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3 years ago

Read 2 more answers

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boyakko [2]

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3 years ago

What is the width of a rectangle with length 5.5 cm and area 220 cm???

Aleks04 [339]

40 cm. Just divide the area by the length. Hope this helps!

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