Forty-two percent of primary care doctors think their patients receive unnecessary medical care (reader's digest, december 2011/january 2012). suppose a sample of 300 primary care doctors were taken. what is the standard error of the sampling distribution of the sample proportion?

The standard error is 0.02849

Step-by-step explanation:

Explanation:-

given data is 42% of primary case doctors think their patients receive un-necessary medical care.

That is The proportion 'p' = 42% = 0.42

Given sample size is n =300

The standard error of the sampling distribution of the sample proportion is

use calculator on simplification , we get

standard error = 0.02849

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step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.