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3 years ago

Can anybody solve this?

Mathematics

1 answer:

AysviL [449]3 years ago

7 0

Answer:

nope can't even read it

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After calculating the sample size needed to estimate a population proportion to within 0.05, you have been told that the maximum

Svetlanka [38]

Answer: 40000

Step-by-step explanation:

The formula to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$ , where p is the prior estimate of the population proportion.

Here we can see that the sample size is inversely proportion withe square of margin of error.

i.e. $n\ \alpha\ \dfrac{1}{E^2}$

By the equation inverse variation, we have

$n_1E_1^2=n_2E_2^2$

Given : $E_1=0.05$ $n_1=1000$

$E_2=0.025$

Then, we have

$(1000)(0.05)^2=n_2(0.025)^2\\\\\Rightarrow\ 2.5=0.000625n_2\\\\\Rightarrow\ n_2=\dfrac{2.5}{0.000625}=4000$

Hence, the sample size will now have to be 4000.

6 0

3 years ago

What times 8 equals 3

Nadusha1986 [10]

Answer:

2.6

Step-by-step explanation:

i hope this helps bro because i know this is the right answer because i think so and im pretty sure im right because I think so

5 0

3 years ago

Read 2 more answers

Ab with slope = 5 and ST with slope = 5

9966 [12]

Answer:

Parallel

Step-by-step explanation:

ffhuyghhtgh

5 0

2 years ago

Please help!

Inessa05 [86]

24 girls divided by 6 girls = 4 boys. 3 boys for every girl and there is 6 girls so you would do 4 x 3 = 12 boys.

3 0

3 years ago

Read 2 more answers

The population of a town is 81,712 and declines continuously at a rate of 4.1% each year. What is the approximate population of

Ganezh [65]

Data:

P (Final population) = ?
Po (Initial population) = 81712
r (rate) = 4,1% = 0,041
t (time in years) = 17

$P = Po - (Po*r*t)$
$P = 81712 -(81712*0,014*17)$
$P = 81712 - 56953.264$
$P =24758.736$
$\boxed{P \approx 24759}$

Answer:
B) 24759

4 0

3 years ago