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3 years ago

14

Faz um bom tempo que não faço expressões numéricas,vcs podem me ajudar!

1 answer:

Alekssandra [29.7K]3 years ago

6 0

Answer:

English Plz

Step-by-step explanation:

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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:

<em>The size of the sample 'n' = 2401</em>

Step-by-step explanation:

<u><em>Step:1</em></u>

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

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

<u><em>Step:2</em></u>

<em>The margin of error is determined by </em>

<em> </em> $0.02 = \frac{1.96( \frac{1}{2} ) }{\sqrt{n} }$ <em></em>

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

√n = 49

Squaring on both sides, we get

n = 49 × 49

n = 2401

<u>Final answer:-</u>

<em>The size of the sample 'n' = 2401 </em>

8 0

3 years ago

Please help me out..

Firdavs [7]

I think it’s B I’m sorry if I’m wrong

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2 years ago

HELP I NEED HELP ASAP

ValentinkaMS [17]

Answer: a

Step-by-step explanation:

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3 years ago

Given f(x) = 6 (1 - x) +11 what is the value of f(8)

Aleksandr [31]

f(8) = 6 (1-8) +11
= 6 (-7) + 11
= -42 +11
= -31

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3 years ago

HELP QUICK! NO BOTS!

gtnhenbr [62]

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Step-by-step explanation:

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2 years ago