According to the University of Nevada Center for Logistics Management, 5% of all merchandise sold in the United States gets returned. A Houston department store sampled 100 items sold in January and found that 10 of the items were returned. a. Construct a point estimate of the proportion of items returned for the population of sales transactions at the Houston store. S (to 4 decimals) b. Construct a 98% condence interval for the proportion of returns at the Houston store. (S , S) (to 4 decimals) c. Is the proportion of returns at the Houston store signicantly different from the returns for the nation as a whole? Provide statistical support for your answer. H0 :00 0.00 H. :00 0.00 z-value C] (to 2 decimals) p-value [:] (to 4 decimals) the null. Yes, we enough evidence to prove that Houston is different from the national average