Answer:

Explanation:
Given : Out of 100 students sampled, 70 of them said that they hoped to get married someday.
i.e. Sample size : n= 100 and Sample proportion:

Using standard normal table for z,
Critical z-value(two-tailed) for 68% confidence =

Now, confidence interval for population proportion:-

Hence, the approximate percentage of the students in the population who hope to get married someday =
