According to a research center, 6% of all merchandise sold in a particular country gets returned. A department store in a certain city sampled 80 items sold in January and found that 12 of the items were returned.

(a)Construct a point estimate of the proportion of items returned for the population of sales transactions at the store in the given city.

(b)Construct a 95% confidence interval for the proportion of returns at the store in the given city. (Round your answers to four decimal places.) ___ to ___

Find the value of the test statistic. (Round your answer to two decimal places.)

Find the p-value. (Round your answer to four decimal places.)p-value =