If someone could please answer his for me ASAP I would really appreciate it thank youu

A sociologist is interested in determining if those shopping at the mall tend to spend more money if they are with friends versus if they are shopping alone. She interviews 8 shoppers who regularly shop at the mall, both alone and with friends, and inquires about the following two variables: X 1 =amount spent when they last shopped alone and X2 amount spent when they last shopped with their friends. Below is the data she collected: Shopper Xil Xiz 38 72 NE 10 15 3 100 150 60 50 48 40 Iau 30 90 130 100 50 75 (a) What type of test do we need to conduct and what assumptions are necessary? (b) Assuming our assumptions in (a) are valid, by hand, conduct an appropriate test of significance at 1% level of significance to determine if shoppers spend more money when they are with friends than when they are alone using a rejection region approach