Identify the margin of error 211 8 dollars Round to one decimal place as needed Construct a 95 confidence interval for the population mean Part 2 of 3 Round to one decimal place as needed Points 0 4 of 1 In a random sample of seven cell phones the mean full retail price was 591 50 and the standard deviation was 229 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 Interpret the results Save