X < -1.......this is a vertical line
ur graph will be a dashed line going up and down thru -1 on the x axis....shading will be to the left of the line
Solution :
Given :





So we want to test :
vs 
a). For 98% confidence interval :



= (1.956, 10.045)
Word form: Three hundred fourteen thousand two hundred seven.
Expanded form: 300,000 + 10,000 + 4,000 + 200 + 7