In a random sample of 100 estate tax returns that was audited by the Internal Revenue Service,

Question:

In a random sample of 100 estate tax returns that was audited by the Internal Revenue Service, it was determined that the mean amount of additional tax owed was $3421 with a standard deviation of $2583.Construct and interpret a 90% conﬁdence interval for the mean additional amount of tax owed for estate tax returns.