Use StatCrunch for this problem. Do not use values for z or t that you round, get from tables, etc. Only use StatCrunch. In a survey, 10 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $34 and standard deviation of $7. Construct a confidence interval at a 80% confidence level. Give your answers to one decimal place. Check