In a survey, 25 people were asked how much they spent on

Last updated: 7/9/2022

In a survey, 25 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $41 and a standard deviation of $5. Find the margin of error, E, at a 90% confidence level. (Hint: Use of the Confidence Intervals (XLS) Template (download) or Mean Confidence Interval Website is recommended.) A. 1.711 B. 1.645 C. 1.28 D.0.9