A simple random sample of 12 iPhones being sold over the Internet had the following prices in dollars XXXXXXXXXX XXXXXXXXXX 291. Assume that it is reasonable to believe that the population is...

A simple random sample of 12 iPhones being sold over the Internet had the following prices in dollars 287 311 262 313 286 329 316 286 348 265 291. Assume that it is reasonable to believe that the population is approximately normal and the population standard deviation of 67. What is the upper bound of the 95% confidence interval for the mean price for all iPhones at this type? Round your answer to one decimal place. Write only a number as your answer.