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Angelina_Jolie [31]
3 years ago
12

I just need to know if I add, subtract, divide, or multiply, I think I divide but not sure

Mathematics
1 answer:
nadya68 [22]3 years ago
6 0
You would be dividing .
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You want to test your newly created Web site, so you have 250 people access it from random locations at random times. Of the peo
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Answer: 505

Step-by-step explanation:

The formula to find the sample size n , if the prior estimate of the population proportion (p) is known:

n= p(1-p)(\dfrac{z}{E})^2 , where E=  margin of error and z = Critical z-value.

Let p be the population proportion of crashes.

Prior sample size = 250

No. of people experience computer crashes = 75

Prior proportion  of crashes p=\dfrac{75}{250}=0.3

E= 0.04

From z-table , the z-value corresponding to 95% confidence interval = z=1.96

Required sample size will be :

n=0.3(1-0.3)(\dfrac{1.96}{0.04})^2 (Substitute all the values in the above formula)

n= (0.21)(49)^2= 0.21\times2401

n= 504.21\approx505   (Rounded to the next integer.)

∴ Required sample size = 505

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3 years ago
Given MN= PQ, NO=QR,.and OM=RP ​
shtirl [24]

Answer:

Step-by-step explanation:

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