A senator wishes to estimate the proportion of United States voters who favor

abolishing the Electoral College. How large a sample is needed in order to be 90%

confident that the sample proportion will not differ from the true proportion by more

than 3%?

And rounded up we have that n=748

Step-by-step explanation:

The confidence level is 90% and the significance level would be and and the critical value for this case is:

The margin of error for the proportion interval is given by this formula:  

   (a)  

And on this case we want a margin of error of and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

  (b)  

Since we don't hace any prior info for the population proportion we can use . And replacing into equation (b) the values from part a we got:

And rounded up we have that n=748

he has now walked a total of what?

if i know what this is maybe i can

step-by-step explanation:

step-by-step explanation: