In a random sample of seven cell​ phones, the mean full retail price was ​$407.00 and the standard deviation was ​$196.00. Assume the population is normally distributed and use the​t-distribution to...

In a random sample of

cell​ phones, the mean full retail price was

and the standard deviation was

Assume the population is normally distributed and use the​t-distribution to find the margin of error and construct a

confidence interval for the population mean

Interpret the results.