Assignment: HW 6 Assignment Score: 61.45% Save Submit Assignment for Grading Questions Exercise 09.42 Algo (Population Proportion) Question 18 of 18 A-Z 16. Check My Work 17. 18. According to the University of Nevada Center for Logistics Management, 10% of all merchandise sold in the United States gets returned. A Houston department store sampled 100 items sold in January and found that 11 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. (to 4 decimals) b. Construct a 90% confidence interval for the proportion of returns at the Houston store. ( ) (to 4 decimals) c. Is the proportion of returns at the Houston store significantly different from the returns for the nation as a whole? Provide statistical support for your answer. Since the confidence interval -Select your answer-0.10, we conclude that the return rate for the Houston store-Select your answer the U.S. national return rate. Icon Key Check My Work Exercise 09.42 Algo (Population Proportion) Save Question 18 of 18 Submit Assignment for Grading