In a survey, 11 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $30 and standard deviation of $7. Construct a confidence...

In a survey, 11 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $30 and standard deviation of $7. Construct a confidence interval at a 99% confidence level. Write in format  ¯x  ± M.O.E.


Give your answers to one decimal place.
(¯x)                        (M.O.E.)


____________ ±  __________