The Department of Kids states that the cost of raising a child from birth to the age of legal adulthood is $37000. You think that the cost is much greater. You take a sample of 150 families and record what their cost of raising their child was. You find that their mean cost was $38602. Assume that you know that the population standard deviation cost for raising a child is $8000. Test the claim at a 5% level of significance. Ho: = 37000 Ha: > 37000 What is the value of your test statistic? (this is your z-score) Round your answer to four decimal places. alo G