Results from previous studies show 79% of all high school seniors from a certain city plan to attend college after graduation. A random sample of 200 high school seniors from this city reveals that 162 plan to attend college. Does this indicate that the percentage has increased from that of previous studies? Test at the 5% level of significance.
Compute the z or t value of the sample test statistic.
A. z = 0.69
B. t = 1.645
C. z = 1.96
D. z = 0.62