Question 1165203
The point estimate is 61/317=0.1924
z=(0.192-0.261)/sqrt (0.261*0.739/317)
=-0.06857/0.0247
=-2.776 ir -2.78 ANSWER 
p-value is amount of area of curve to left of this doubled, because 2-way test and is 0.0054
Note: where one rounds makes a difference in an answer to four decimal places.