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. 150.8 dollars (Round to one decimal place as needed.) Construct a 95% confidence interval for the population mean. ([ound to one decimal place as needed ) X Vi VI More Enter your answer in the edit fields and then click Check Answer Help Me Solve This View an Example Get More Help Clear All Check Answer OK