You are given e=0.020 a confidence level of 90% and a sample portion of 85% from a recent survey find the minimum sample size to estimate a population proportiona.1225b.259c.5751d.863

The answer you are looking for is D.863                                                                                      

Option d)863

Step-by-step explanation:

Given that

e=Margin of error = 0.020

Confidence level =90%

zcritical for 90% =1.645

We have margin of error = 1.645 (std dev)/sq rt n

where n = sample size

Since p = 0.85

Std error =

Substitute in margin of error to get

0.020=1.645(0.357)/sqrt n

Simplify to get

n=862.54

Since n cannot be in decimal round off to the next integer

n =863

answer:

a=9

step-by-step explanation: lmk if you need a explanation

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.