PART I:

A sample was taken randomly of 675 families in the Dominican Republic, 232 responded they could not afford $300 unexpected expenses without tapping into loans.

Define the population in this survey.

What is the population parameter estimated in this survey?

What is the point estimate for the parameter?

What is the statistic used to measure the uncertainty of the point estimate? Compute the statistics.

Consider the true population value is found to be 40%. Would the resulting value change much if we were to use this proportion to proportion to recompute the value of the statistic in (d) using p=0.4?

PART II:

A cinema theatre conducted a random sample on 504 viewers over a period of a year and found that 124 of them made their visit because of a coupon they had received in their mail. Construct a 95% confidence interval for the fraction of all those viewers who made a visit because of a coupon they'd received in the mail.