1. Suppose you want to predict reading speed using, among other variables, the device the person is reading from. This device could be a regular book, an iPad, a Kindle or others. Therefore, you create dummy variables for device. How exactly, would you do it?
2. If you use regular books as the reference category and say another researcher uses Kindle as the reference category, will you get the same regression results. Explain

Tyler went to the supermarket to buy food for a food pantry. he has $36, and can carry up to 20 pounds of food in his backpack. pasta costs $1 for a 1-pound package. pasta sauce costs $3 for a 1.5 pound jar. let x = the number of packages of pasta and y = the number of jars of pasta sauce. one package of pasta is the right amount to go with one jar of pasta sauce. what is the best numbers of packages of pasta and jars of pasta sauce to buy for the food pantry? how many packages of pasta? how many jars of pasta sauce? explain your reasoning.