Mathematics: In a poll of 1000 american adults conducted on august 5-9, 2010, 44% (p¯=0.44) of respondents approve the job that president barack obama was doing handling the economy. the goal is to construct a 90% confidence interval for the percentage (p) of american adults who approved of barack obama s handling of the economy around the period the poll was conducted. the standard error (se) of p¯p¯ is (a) 0.016 (b) 0.44 (c) 0.0002 (d) 0.0004

In a poll of 1000 american adults conducted on august - id10003801744, Alizerodriguez2010

saintsfan2004

10.01.2022

A) 0.016

Step-by-step explanation:

The standard error is also known as the standard deviation of sampling distribution.

Formula : $S.E.=\sqrt{\dfrac{\overline{p}(1-\overline{p})}{n}}$

Given : The proportion of respondents approve the job that President Barack Obama was doing handling the economy : $\overline{p}=0.44$

Sample size : n= 1000

Then, the standard error (SE) of $\overline{p}$ is

$S.E.=\sqrt{\dfrac{0.44(1-0.44)}{1000}}\\\\=\sqrt{0.0002464}\\\\=0.0156971\approx0.016$

Hence, the standard error (SE) of $\overline{p}$ is 0.016 .

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jacamron

21.01.2021

yes it is a function

Step-by-step explanation:

reason why is if u do the virtical line text it shows that it is a function,

another explanation is it doesn't have two of the same x- values

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