The Young Children's Charity would like to provide an accurate estimate of how much it costs to raise a child between the ages of 2 and 12 for its fund raising campaign. They contracted with you to find out how much households spent on raising a child in 1996. They gave you a list all 400,000 residential telephone customers in the area they will operate the campaign. You sampled every 400th address on the list. The Charity will have a survey company contact each household sampled and ask whether or not there is a child between 2 and 12 years of age living in the household. If there is, they will ask other questions and record the total amount spent raising a child in the past two months. They will multiply this amount by 6 to get an annual cost.According to the central limit theorem used in inferential statistics, _________.