Score: U Of 1 and Confidence I In a random sample of seven cell phones, the mean full retail price was $518.00 and the standard deviation was $163.00. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence interval for the population mean p. Interpret the results. Identify the margin of error. (Round to one decimal place as needed.) Enter your answer in the answer box and then click Check Answer. Help Me Solve This View an Example Get More Help Clear All Check