91影视

We are given following table:

We need to find correct alternative corresponding to given data.

Formula for percentage = $\frac{value}{totalvalue}脳100$

$鈬�$Percentage of students who voted Republican = $\frac{712}{1850}脳100=38\%$

So, option (a) is incorrect

$鈬�$The marginal relative frequencies for the variable choice of candidate are given by

Obama = $\frac{1029}{1850}脳100=55.6\%$ ; Romney = $\frac{695}{1850}脳100=37.56\%$

Other = localid="1654225534579" $\frac{21}{1850}脳100=1.1\%$; Undecided = localid="1654225615414" $\frac{105}{1850}脳100=5.7\%$

So, option (b) is correct.

localid="1654225660667" $鈬�$Percentage of democrats planned to vote for Romney = localid="1654225544682" $\frac{78}{1037}脳100=7.5\%$

So, option (c) is incorrect.

localid="1654225663739" $鈬�$Percentage of who are undecided are Independents = localid="1654225550676" $\frac{45}{106}脳100=42.4\%$

So, option (d) is incorrect.

localid="1654225648597" $鈬�$Percentage distribution of political persuasion among those for whom Romney =

Democrats supporting Romney = localid="1654225556232" $\frac{78}{1037}脳100=7.5\%$

Republican supporting Romney = localid="1654225561219" $\frac{512}{598}脳100=85.6\%$

So , option (e) is incorrect.

Hence, option (b) is the only correct option.