A random group of 36 people in Toms River were asked “how much money did you spend at the grocery store last week?" The mean amount spent was $149.50 with a standard deviation of $22.50. Construct a...

A random group of 36 people in Toms River were asked “how much money did you spend at the grocery store last week?" The mean amount spent was $149.50 with a standard deviation of $22.50. Construct a 90% confidence interval for this sample mean. Show all calculations and draw the interval.